Task - Control Flow Statements - Conditional Statements - Decision Making Statements - if-else-if ladder

[akash-coded]

Student Grading System

A school has the following rules for the grading system:
a. Below 25 - F
b. 25 to 45 - E
c. 45 to 50 - D
d. 50 to 60 - C
e. 60 to 80 - B
f. Above 80 - A

Ask the user to enter the marks and print the corresponding grade using:
i. multiple if-statements
ii. if-else-if ladder

[Karthick-code]

1. If Else If

import java.util.Scanner;
public class MultipleCondition {
    public static void main(String[] args) {
        Scanner sc =new Scanner(System.in);
        System.out.println("Enter the Mark:");
        int mark=sc.nextInt();
        char grade;
        if(mark<25){
            grade='F'; 
        }
        else if(mark>=25 && mark<45){
            grade='E'; 
        }
        else if(mark>=45 && mark<50){
            grade='D';
        }
        else if(mark>=50 && mark<60){
            grade='C';
        }
        else if(mark>=60 && mark<80){
            grade='B';
        }
        else{
            grade='A';
        }
        System.out.println("Grade: " +grade);
        sc.close();
    }
}

2.Multiple If

import java.util.Scanner;
public class MultipleCondition {
    public static void main(String[] args) {
        Scanner sc =new Scanner(System.in);
        System.out.println("Enter the Mark:");
        int mark=sc.nextInt();
        char grade;
        if(mark<25){
            grade='F'; 
        }
        if(mark>=25 && mark<45){
            grade='E'; 
        }
        if(mark>=45 && mark<50){
            grade='D';
        }
        if(mark>=50 && mark<60){
            grade='C';
        }
        if(mark>=60 && mark<80){
            grade='B';
        }
        if(mark>=80){
            grade='A';
        }
        System.out.println("Grade: " +grade);
        sc.close();
    }
}

[premkumar-selvam]

i)

import java.util.*;
public class Main
{
	public static void main(String[] args) {
    Scanner obj=new Scanner(System.in);
    System.out.println("Enter the grade mark:");
    int gradeMark=obj.nextInt();
    if(gradeMark<25)
    {
        System.out.println("Grade F");
    }
    if(gradeMark>=25&&gradeMark<45)
    {
        System.out.println("Grade E");
    }
    if(gradeMark>=45&&gradeMark<50)
    {
        System.out.println("Grade D");
    }
    if(gradeMark>=50&&gradeMark<60)
    {
        System.out.println("Grade C");
    }
    if(gradeMark>=60&&gradeMark<80)
    {
        System.out.println("Grade B");
    }if(gradeMark>=80)
    {
        System.out.println("Grade A");
    }
    obj.close();
  }
}

ii)

import java.util.*;
public class Main
{
	public static void main(String[] args) {
    Scanner obj=new Scanner(System.in);
    System.out.println("Enter the grade mark:");
    int gradeMark=obj.nextInt();
    if(gradeMark<25)
    {
        System.out.println("Grade F");
    }else if(gradeMark>=25&&gradeMark<45)
    {
        System.out.println("Grade E");
    }else if(gradeMark>=45&&gradeMark<50)
    {
        System.out.println("Grade D");
    }else if(gradeMark>=50&&gradeMark<60)
    {
        System.out.println("Grade C");
    }else if(gradeMark>=60&&gradeMark<80)
    {
        System.out.println("Grade B");
    }else if(gradeMark>=80)
    {
        System.out.println("Grade A");
    }else{
        System.out.println("Eneter the grade mark corrctly");
    }
    obj.close();
  }
}

[Nithy26]

Grading

multiple if-statements

import java.util.*;
public class StudGrade{
    public static void main(String[] args){
        Scanner sc = new Scanner(System.in);
        System.out.println("Enter mark :");
        int mark = sc.nextInt();
        if(mark>80)
        System.out.println("Grade : A");
        if(mark>60 && mark<80)
        System.out.println("Grade : B");
        if(mark>50 && mark<=60)
        System.out.println("Grade : C");
        if(mark>45 && mark<=50)
        System.out.println("Grade : D");
        if(mark>=25 && mark<=45)
        System.out.println("Grade : E");
        if(mark<25)
        System.out.println("Grade : F");

        
    }
}

if-else-if ladder

import java.util.*;
public class StudGrade{
    public static void main(String[] args){
        Scanner sc = new Scanner(System.in);
        System.out.println("Enter mark :");
        int mark = sc.nextInt();
        if(mark>80)
        System.out.println("Grade : A");
        else if(mark>60 && mark<80)
        System.out.println("Grade : B");
        else if(mark>50 && mark<=60)
        System.out.println("Grade : C");
        else if(mark>45 && mark<=50)
        System.out.println("Grade : D");
        else if(mark>=25 && mark<=45)
        System.out.println("Grade : E");
        else
        System.out.println("Grade : F");

        
    }
}

[Nirmalkumara99]

1.Multiple If

public class MultipleIf {
    public static void main(String[] args) {
        Scanner scanner = new Scanner(System.in);
        System.out.println("Enter grade");
        int grade=scanner.nextInt();
        if(grade>80)
        {
            System.out.println("Grade A");
        }
        if(grade>60 && grade<=80)
        {
            System.out.println("Grade B");
        }
        if(grade>50 && grade<=60)
        {
            System.out.println("Grade C");
        }
        if(grade>45 && grade<=50)
        {
            System.out.println("Grade D");
        }
        if(grade>25 && grade<=45)
        {
            System.out.println("Grade E");
        }
        if(grade<25)
        {
            System.out.println("Grade F");
        }
        scanner.close();
    }
}

2. If else If Ladder

public class IfElseIfLadder {
    public static void main(String[] args) {
        Scanner scanner = new Scanner(System.in);
        System.out.println("Enter grade");
        int grade=scanner.nextInt();
        if(grade>80)
        {
            System.out.println("Grade A");
        }
        else if(grade>60)
        {
            System.out.println("Grade B");
        }
        else if(grade>50)
        {
            System.out.println("Grade C");
        }
        else if(grade>45)
        {
            System.out.println("Grade D");
        }
        else if(grade>25)
        {
            System.out.println("Grade E");
        }
        if(grade<25)
        {
            System.out.println("Grade F");
        }
        scanner.close();
    }
}

[kadhalish]

1.Multiple If

package Operators.ControlFlow;

import java.util.Scanner;

public class Grade {
    public static void main(String[] args) {
        Scanner sc=new Scanner(System.in);
        System.out.println("Enter the Marks: ");
        int marks=Integer.parseInt(sc.nextLine());
        if(marks>80){
            System.out.println("Grade: A");
         }
         if(marks>60 && marks<=80){
            System.out.println("Grade: B");
         }
         if(marks>50 && marks<=60){
            System.out.println("Grade: C");
         }
         if(marks>45 && marks<=50){
            System.out.println("Grade: D");
         }
         if(marks>25 && marks<=45){
            System.out.println("Grade: E");
         }
         if(marks<=25){
            System.out.println("Grade: F");
         }
        sc.close();
    }
}

2.Else-if Ladder

package Operators.ControlFlow;

import java.util.Scanner;

public class Grade {
    public static void main(String[] args) {
        Scanner sc=new Scanner(System.in);
        System.out.println("Enter the Marks: ");
        int marks=Integer.parseInt(sc.nextLine());
        if(marks>80){
            System.out.println("Grade: A");
         }
       else if(marks>60 && marks<=80){
            System.out.println("Grade: B");
         }
       else if(marks>50 && marks<=60){
            System.out.println("Grade: C");
         }
        else if(marks>45 && marks<=50){
            System.out.println("Grade: D");
         }
        else if(marks>25 && marks<=45){
            System.out.println("Grade: E");
         }
      else{
            System.out.println("Grade: F");
         }
        sc.close();
    }
}

[Sanjayee]

cond.java

import java.util.Scanner;
public class cond {
    public static void main(String[] args)
    {
        Scanner sc=new Scanner(System.in);
        int marks;
        System.out.print("Enter the marks: ");
        marks=Integer.parseInt(sc.nextLine());
        if(marks<81)
        {
            if(marks<25)
                System.out.println("F");
            if(marks>=25)
            {
                if(marks<=45)
                    System.out.println("E");
            }
            if(marks>=45 && marks<=50)
                System.out.println("D");
            if(marks>=50 && marks<=60)
                System.out.println("C");
            else if(marks>=60 && marks<=80)
                System.out.println("B");
        }
        else
            System.out.println("A");
        sc.close();
    } 
}

Output

[RajkapoorR]

1

import java.util.Scanner;

public class If {
    public static void main(String[] args) {
        Scanner sc=new Scanner(System.in);
        System.out.println("Enter the Marks: ");
        int marks=Integer.parseInt(sc.nextLine());
        if(marks<=25){
            System.out.println("Grade: F");
         }
         if(marks>25 && marks<=45){
            System.out.println("Grade: E");
         }
         if(marks>45 && marks<=50){
            System.out.println("Grade: D");
         }
         if(marks>50 && marks<=60){
            System.out.println("Grade: C");
         }
         if(marks>60 && marks<=80){
            System.out.println("Grade: B");
         }
         if(marks>80){
            System.out.println("Grade: A");
         }
        sc.close();
    }
}

2

public class ElseIfLadder {
    public static void main(String[] args) {
        Scanner scanner = new Scanner(System.in);
        System.out.println("Enter grade");
        int grade=scanner.nextInt();
        if(grade>80)
        {
            System.out.println("Grade A");
        }
        else if(grade>60 && grade<=80)
        {
            System.out.println("Grade B");
        }
        else if(grade>50 && grade<=60)
        {
            System.out.println("Grade C");
        }
        else if(grade>45 && grade<=50)
        {
            System.out.println("Grade D");
        }
        else if(grade>25 && grade<=45)
        {
            System.out.println("Grade E");
        }
        if(grade<25)
        {
            System.out.println("Grade F");
        }
        scanner.close();
    }
}

[Vijey-A]

Problem 1 - MultipleIf-Statements

package ControlFlowStatement;

import java.util.Scanner;

public class StudentGradingSystem {
  public static void main(String[] args) {
    Scanner sc=new Scanner(System.in);
    System.out.println("Enter Student mark: ");
    int marks=sc.nextInt();
    if(marks<25){
      System.out.println("Grade F");
    }
    if(marks>=25 && marks<45){
      System.out.println("Grade E");
    }
    if(marks>=45 && marks<50){
      System.out.println("Grade D");
    }
    if(marks>=50 && marks<60){
      System.out.println("Grade C");
    }
    if(marks>=60 && marks<80){
      System.out.println("Grade B");
    }
    if(marks>=80){
      System.out.println("Grade A");
    }
    sc.close();
  }
}

Problem 2 - IfElseIfLadder

package ControlFlowStatement;

import java.util.Scanner;

public class StudentGradingIfElseLadder {
  public static void main(String[] args) {
    Scanner sc=new Scanner(System.in);
    System.out.println("Enter Student mark: ");
    int marks=sc.nextInt();
    if(marks>80){
      System.out.print("Grade A");
    }
    else if(marks>=60){
      System.out.print("Grade B");
    }
    else if(marks>=50){
      System.out.print("Grade C");
    }
    else if(marks>=45){
      System.out.print("Grade D");
    }
    else if(marks>=25){
      System.out.print("Grade E");
    }
    else{
      System.out.print("Grade F");
    }
    sc.close();
  }
}

[Shalini-Venugopal]

Mulitiple if-statement

public class Grade {
    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        System.out.println("Enter the Mark ::");
        int grade = sc.nextInt();
        if (grade > 80) 
            System.out.println("Grade A");
        if (grade > 60 && grade < 80) 
            System.out.println("Grade B");
        if (grade > 50 && grade < 60) 
            System.out.println("Grade c");
        if (grade > 45 && grade < 50) 
            System.out.println("Grade D");
        if (grade > 25 && grade < 45) 
            System.out.println("Grade E");
        if (grade < 25) {
            System.out.println("Grade F");
        }
    }
}

else if statement

public class Grade {
    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        System.out.println("Enter the Mark ::");
        int grade = sc.nextInt();
        if (grade > 80) 
            System.out.println("Grade A");
        else if (grade > 60 && grade < 80) 
            System.out.println("Grade B");
        else if (grade > 50 && grade < 60) 
            System.out.println("Grade c");
        else if (grade > 45 && grade < 50) 
            System.out.println("Grade D");
        else if (grade > 25 && grade < 45) 
            System.out.println("Grade E");
        else 
            System.out.println("Grade F");
    }
}

[abitha05]

Multiple If

package module.decision;

import java.util.Scanner;

public class MultipleDemo {
    public static void main(String[] args) {
        Scanner scanner = new Scanner(System.in);
        System.out.println("Enter the mark");
        int mark= scanner.nextInt();
        if(mark>80)
            System.out.println("Grade : A ");
        if(mark<=80 && mark>60)
            System.out.println("Grade : B");
        if(mark<=60 && mark>50)
            System.out.println("Grade : C ");
        if(mark<=50 && mark>45)
            System.out.println("Grade : D ");
        if(mark<=45 && mark>25)
            System.out.println("Grade : E");
        if(mark<25)
            System.out.println("Grade : F ");
        scanner.close();

    }
}

else if ladder

package module.decision;

import java.util.Scanner;

public class LadderDemo {
    
    public static void main(String[] args) {
        Scanner scanner = new Scanner(System.in);
        System.out.println("Enter the mark");
        int mark= scanner.nextInt();
        if(mark>80)
            System.out.println("Grade : A ");
        else if(mark<=80 && mark>60)
            System.out.println("Grade : B");
        else if(mark<=60 && mark>50)
            System.out.println("Grade : C ");
        else if(mark<=50 && mark>45)
            System.out.println("Grade : D ");
        else if(mark<=45 && mark>25)
            System.out.println("Grade : E");
        else
            System.out.println("Grade : F ");
        scanner.close();

    }
}

[Maha1805]

TASK-DECISION MAKING STATEMENT

1.STUDENT GRADING SYSTEM

GradingDemo.java

//Multiple if

import java.util.Scanner;
public class GradingDemo {
    public static void main(String[] args) {
      Scanner sc=new Scanner(System.in);
      System.out.println("ENTER THE MARK :");
      int mark=Integer.parseInt(sc.nextLine());
      if(mark>80)
      System.out.println("GRADE : A");
      if(mark>60 && mark<80)
      System.out.println("GRADE : B");
      if(mark>50 && mark<60)
      System.out.println("GRADE : C");
      if(mark>45 && mark<50)
      System.out.println("GRADE : D");
      if(mark>25 && mark<45)
      System.out.println("GRADE : E");
      if(mark<25)
      System.out.println("GRADE : E");

// if elseif ladder

    if(mark>80)
      System.out.println("GRADE : A");
    else if(mark>60 && mark<80)
      System.out.println("GRADE : B");
    else if(mark>50 && mark<60)
      System.out.println("GRADE : C");
    else if(mark>45 && mark<50)
      System.out.println("GRADE : D");
    else  if(mark>25 && mark<45)
      System.out.println("GRADE : E");
    else  if(mark<25)
      System.out.println("GRADE : E");

//if else if

      if(mark>80)
      System.out.println("GRADE : A");
      else{
      if(mark>60 && mark<80)
      System.out.println("GRADE : B");
      else{
      if(mark>50 && mark<60)
      System.out.println("GRADE : C");
      else
      {
      if(mark>45 && mark<50)
      System.out.println("GRADE : D");
      else
    {
      if(mark>25 && mark<45)
      System.out.println("GRADE : E");
      else{
      if(mark<25)
      System.out.println("GRADE : E");
      }
    }
}
}
}
      sc.close();
      
    }
}

Output

[naveenkarthik-klu]

1. multiple if-statements

import java.util.Scanner;

public class Grade2 {
    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        System.out.println("Enter marks of three subjects");
        int a = Integer.parseInt(sc.nextLine());
        int b = Integer.parseInt(sc.nextLine());
        int c = Integer.parseInt(sc.nextLine());
        double avg = (double) (a + b + c) / 3;
        System.out.println(String.format("Average marks: %.2f", avg));
        char g = 'Q';
        if (avg > 80) {
            g = 'A';
        }
        if (avg > 60 && avg <= 80) {
            g = 'B';
        }
        if (avg > 50 && avg <= 60) {
            g = 'C';
        }
        if (avg > 45 && avg <= 50) {
            g = 'D';
        }
        if (avg > 25 && avg <= 45) {
            g = 'E';
        }
        if (avg < 25) {
            g = 'F';
        }
        System.out.println("Grade " + "'" + g + "'");
        sc.close();
    }
}

2. if-else-if ladder

import java.util.Scanner;

public class Grade3 {
    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        System.out.println("Enter marks of three subjects");
        int a = Integer.parseInt(sc.nextLine());
        int b = Integer.parseInt(sc.nextLine());
        int c = Integer.parseInt(sc.nextLine());
        double avg = (double) (a + b + c) / 3;
        System.out.println(String.format("Average marks: %.2f", avg));
        char g = 'X';
        if (avg > 80) {
            g = 'A';
        } else if (avg > 60 && avg <= 80) {
            g = 'B';
        } else if (avg > 50 && avg <= 60) {
            g = 'C';
        } else if (avg > 45 && avg <= 50) {
            g = 'D';
        } else if (avg > 25 && avg <= 45) {
            g = 'E';
        } else {
            g = 'F';
        }
        System.out.println("Grade " + "'" + g + "'");
        sc.close();

    }
}

[Tamilarasi-palanisamy]

1 if-else-if ladder

import java.util.Scanner;

public class FindGrade {
    public static void main(String[] args) {
        Scanner sc=new Scanner(System.in);
        System.out.println("Enter the mark of subject 1:");
        int tamil=sc.nextInt();
        System.out.println("Enter the mark of subject 2:");
        int english=sc.nextInt();
        System.out.println("Enter the mark of subject 3:");
        int maths=sc.nextInt();
        int average=(tamil+english+maths)/3;
        System.out.println("average: " + average);
        if(average >80){
            System.out.println("The grade of student is A:");
        }    
        else if(average<=80 && average>60){
            System.out.println("The grade of student is B");
        }
        else if(average<=60 && average>50){
            System.out.println("The grade of student is C");
        }
        else if(average<=50 && average>45){
            System.out.println("The grade of student is D");
        }
        else if(average<=45 && average>25){
            System.out.println("The grade of student is E");
        }
        else if(average<=25){
            System.out.println("The grade of student is F");
        }
        else{
            System.out.println("The Student is Failed");
        }
    }
}

2 multiple if

import java.util.Scanner;

public class FindGrade {
    public static void main(String[] args) {
        Scanner sc=new Scanner(System.in);
        System.out.println("Enter the mark of subject 1:");
        int tamil=sc.nextInt();
        System.out.println("Enter the mark of subject 2:");
        int english=sc.nextInt();
        System.out.println("Enter the mark of subject 3:");
        int maths=sc.nextInt();
        int average=(tamil+english+maths)/3;
        System.out.println("average: " + average);
        if(average >80){
            System.out.println("The grade of student is A:");
        }    
        if(average<=80 && average>60){
            System.out.println("The grade of student is B");
        }
        if(average<=60 && average>50){
            System.out.println("The grade of student is C");
        }
        if(average<=50 && average>45){
            System.out.println("The grade of student is D");
        }
        if(average<=45 && average>25){
            System.out.println("The grade of student is E");
        }
        if(average<=25){
            System.out.println("The grade of student is F");
        }
    }
}

[lakshmiparkav]

Multiple If

import java.util.Scanner;
public class MultipleIf {
    public static void main(String[] args) {
        Scanner sc =new Scanner(System.in);
        System.out.println("Enter the Marks:");
        int marks=sc.nextInt();
        if(marks<25){
            System.out.println("grade=F"); 
        }
        if(marks>=25 && marks<45){
            System.out.println("grade=E"); 
        }
        if(marks>=45 && marks<50){
            System.out.println("grade=D");
        }
        if(marks>=50 && marks<60){
            System.out.println("grade=C");
        }
        if(marks>=60 && marks<80){
            System.out.println("grade=B");
        }
        if(marks>=80){
            System.out.println("grade=A");
        }
        sc.close();
    }
}

If else if ladder

import java.util.Scanner;
public class ElseIfLadder {
    public static void main(String[] args) {
        Scanner sc =new Scanner(System.in);
        System.out.println("Enter the Mark:");
        int mark=sc.nextInt();
        if(mark<25){
            System.out.println("grade=F");
        }
        else if(mark>=25 && mark<45){
            System.out.println("grade=E"); 
        }
        else if(mark>=45 && mark<50){
            System.out.println("grade=D");
        }
        else if(mark>=50 && mark<60){
            System.out.println("grade=C");
        }
        else if(mark>=60 && mark<80){
            System.out.println("grade=B");
        }
        else{
            System.out.println("grade=A");
        }
        sc.close();
    }
}

[sarathaselvam24]

1.

import java.util.Scanner;
public class MainClass {
    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        System.out.print("Enter the mark : ");
        int mark=Integer.parseInt(sc.nextLine());
        if(mark>80)
        {
            System.out.println("Grade A");
        }
        else if(mark>60 && mark<=80)
        {
            System.out.println("Grade B");
        }
        else if(mark>50 && mark<=60)
        {
            System.out.println("Grade C");
        }
        else if(mark>45 && mark<=50)
        {
            System.out.println("Grade D");
        }
        else if(mark>25 && mark<=45)
        {
            System.out.println("Grade E");
        }
        if(mark<25)
        {
            System.out.println("Grade F");
        }
    }
}

2.

import java.util.Scanner;
public class MainClass {
    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        System.out.print("Enter the mark : ");
        int mark=Integer.parseInt(sc.nextLine());
        if(mark<=25){
            System.out.println("Grade: F");
         }
         if(mark>25 && mark<=45){
            System.out.println("Grade: E");
         }
         if(mark>45 && mark<=50){
            System.out.println("Grade: D");
         }
         if(mark>50 && mark<=60){
            System.out.println("Grade: C");
         }
         if(mark>60 && mark<=80){
            System.out.println("Grade: B");
         }
         if(mark>80){
            System.out.println("Grade: A");
         }
    }
}

[Kuntapaliwal]

Code

package java_programs;

import java.util.*;

public class ifElseLadder {
    public static void main(String[] args) {
        fnPrintGradesWithMultipleIf();
        fnPrintGradesWithIfElse();
    }

    // A school has the following rules for the grading system:
    // a. Below 25 - F
    // b. 25 to 45 - E
    // c. 45 to 50 - D
    // d. 50 to 60 - C
    // e. 60 to 80 - B
    // f. Above 80 - A
    // Ask the user to enter the marks and print the corresponding grade using:
    // i. multiple if-statements
    static void fnPrintGradesWithMultipleIf() {
        Scanner sc = new Scanner(System.in);
        System.out.println("enter total marks: ");
        int marks = sc.nextInt();
        if (marks > 80)
            System.out.println("Grade: A");
        if (marks > 60 && marks <= 80)
            System.out.println("Grade: B");
        if (marks > 50 && marks <= 60)
            System.out.println("Grade: C");
        if (marks > 45 && marks <= 50)
            System.out.println("Grade: D");
        if (marks > 25 && marks <= 45)
            System.out.println("Grade: E");
        if (marks <= 25)
            System.out.println("Grade: F");

    }

    // ii. if-else-if ladder
    static void fnPrintGradesWithIfElse() {
        Scanner sc = new Scanner(System.in);
        System.out.println("enter total marks: ");
        int marks = sc.nextInt();

        if (marks > 80)
            System.out.println("Grade: A");
        else if (marks > 60)
            System.out.println("Grade: B");
        else if (marks > 50)
            System.out.println("Grade: C");
        else if (marks > 45)
            System.out.println("Grade: D");
        else if (marks > 25)
            System.out.println("Grade: E");
        else
            System.out.println("Grade: F");

    }
}

output

[uzma23]

import java.util.Scanner;

public class discussion83 {
    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        System.out.println("Enter the Mark:");
        int mark = sc.nextInt();
        ifElseIf(mark);
        multipleIf(mark);
    }

    private static void multipleIf(int mark) {
        System.out.println("Multiple Ifs");
        char grade = 'X';
        if (mark < 25) {
            grade = 'F';
        }
        if (mark >= 25 && mark < 45) {
            grade = 'E';
        }
        if (mark >= 45 && mark < 50) {
            grade = 'D';
        }
        if (mark >= 50 && mark < 60) {
            grade = 'C';
        }
        if (mark >= 60 && mark < 80) {
            grade = 'B';
        }
        if (mark >= 80) {
            grade = 'A';
        }
        System.out.println("Grade: " + grade);
    }

    private static void ifElseIf(int mark) {
        System.out.println("If else If");

        char grade;
        if (mark < 25) {
            grade = 'F';
        } else if (mark >= 25 && mark < 45) {
            grade = 'E';
        } else if (mark >= 45 && mark < 50) {
            grade = 'D';
        } else if (mark >= 50 && mark < 60) {
            grade = 'C';
        } else if (mark >= 60 && mark < 80) {
            grade = 'B';
        } else {
            grade = 'A';
        }
        System.out.println("Grade: " + grade);
    }

}

[ghost]

import java.util.Scanner;

public class assugment5 {

    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        System.out.println("Enter the Marks:");
        int marks = sc.nextInt();
        char grade;
        if (marks < 25) {
            grade = 'F';
        }
        if (marks >= 25 && marks < 45) {
            grade = 'E';
        }
        if (marks >= 45 && marks < 50) {
            grade = 'D';
        }
        if (marks >= 50 && marks < 60) {
            grade = 'C';
        }
        if (marks >= 60 && marks < 80) {
            grade = 'B';
        } else {
            grade = 'A';
        }
        System.out.println("Your grade is : " + grade);
        sc.close();
    }
}

import java.util.Scanner;

public class assigment5 {

    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        System.out.println("Enter the Marks:");
        int marks = sc.nextInt();
        char grade;
        if (marks < 25) {
            grade = 'F';
        } else if (marks >= 25 && marks < 45) {
            grade = 'E';
        } else if (marks >= 45 && marks < 50) {
            grade = 'D';
        } else if (marks >= 50 && marks < 60) {
            grade = 'C';
        } else if (marks >= 60 && marks < 80) {
            grade = 'B';
        } else {
            grade = 'A';
        }
        System.out.println("Your grade is : " + grade);
        sc.close();
    }
}

[meghvi-raj]

import java.util.*;

public class D83 {
    public static void main(String[] args) {
        ifLadder();
        ifElseifLadder();
    }

    public static void ifLadder() {
        Scanner sc = new Scanner(System.in);
        System.out.println("enter total marks: ");
        int marks = sc.nextInt();
        if (marks > 80)
            System.out.println("Your Grade: A");
        if (marks > 60 && marks <= 80)
            System.out.println("Your Grade: B");
        if (marks > 50 && marks <= 60)
            System.out.println("Your Grade: C");
        if (marks > 45 && marks <= 50)
            System.out.println("Your Grade: D");
        if (marks > 25 && marks <= 45)
            System.out.println("Your Grade: E");
        if (marks <= 25)
            System.out.println("Your Grade: F");

    }

    public static void ifElseifLadder() {
        Scanner sc = new Scanner(System.in);
        System.out.println("enter total marks: ");
        int marks = sc.nextInt();

        if (marks > 80)
            System.out.println("Your Grade: A");
        else if (marks > 60)
            System.out.println("Your Grade: B");
        else if (marks > 50)
            System.out.println("Your Grade: C");
        else if (marks > 45)
            System.out.println("Your Grade: D");
        else if (marks > 25)
            System.out.println("Your Grade: E");
        else
            System.out.println("Your Grade: F");

    }
}

[ghost]

import java.util.*;

public class d83 {
    public static void main(String[] args) {
        q1();
        q2();
    }

    public static void q1() {
        Scanner obj = new Scanner(System.in);
        System.out.println("enter total marks: ");
        int marks = obj.nextInt();
        if (marks > 80)
            System.out.println("Your Grade: A");
        if (marks > 60 && marks <= 80)
            System.out.println("Your Grade: B");
        if (marks > 50 && marks <= 60)
            System.out.println("Your Grade: C");
        if (marks > 45 && marks <= 50)
            System.out.println("Your Grade: D");
        if (marks > 25 && marks <= 45)
            System.out.println("Your Grade: E");
        if (marks <= 25)
            System.out.println("Your Grade: F");
    }

    public static void q2() {
        Scanner sc = new Scanner(System.in);
        System.out.println("enter total marks: ");
        int marks = sc.nextInt();
        if (marks > 80)
            System.out.println("Your Grade: A");
        else if (marks > 60)
            System.out.println("Your Grade: B");
        else if (marks > 50)
            System.out.println("Your Grade: C");
        else if (marks > 45)
            System.out.println("Your Grade: D");
        else if (marks > 25)
            System.out.println("Your Grade: E");
        else
            System.out.println("Your Grade: F");
    }
}

screenshot

[gayatribabar]

multiple if

import java.util.Scanner;

public class HelloWorld {
    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        System.out.println("Enter mark :");
        int mark = sc.nextInt();
        if (mark > 80)
            System.out.println("Grade : A");
        if (mark > 60 && mark < 80)
            System.out.println("Grade : B");
        if (mark > 50 && mark <= 60)
            System.out.println("Grade : C");
        if (mark > 45 && mark <= 50)
            System.out.println("Grade : D");
        if (mark >= 25 && mark <= 45)
            System.out.println("Grade : E");
        if (mark < 25)
            System.out.println("Grade : F");
    }
}

if else if

import java.util.Scanner;
public class HelloWorld {
    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        System.out.println("Enter mark :");
        int mark = sc.nextInt();
        if (mark > 80)
            System.out.println("Grade : A");
        else if (mark > 60 && mark < 80)
            System.out.println("Grade : B");
        else if (mark > 50 && mark <= 60)
            System.out.println("Grade : C");
        else if (mark > 45 && mark <= 50)
            System.out.println("Grade : D");
        else if (mark >= 25 && mark <= 45)
            System.out.println("Grade : E");
        else
            System.out.println("Grade : F");
    }
}

[Coder-093]

Multiple if

import java.util.*;

public class task83 {
  public static void main(String[] args) {
    Scanner scn = new Scanner(System.in);
    System.out.println("Enter marks");
    int marks = scn.nextInt();

    if (marks < 25) {
      System.out.println("F");
    }
    if (marks >= 25 && marks < 45) {
      System.out.println("E");
    }
    if (marks >= 45 && marks < 50) {
      System.out.println("D");
    }
    if (marks >= 50 && marks < 60) {
      System.out.println("C");
    }
    if (marks >= 60 && marks < 80) {
      System.out.println("B");
    }
    if (marks >= 80) {
      System.out.println("A");
    }
  }
}

if-else-if

import java.util.*;

public class task83 {
  public static void main(String[] args) {
    Scanner scn = new Scanner(System.in);
    System.out.println("Enter marks");
    int marks = scn.nextInt();
    if (marks <= 100) {
      if (marks < 25) {
        System.out.println("F");
      } else if (marks >= 25 && marks < 45) {
        System.out.println("E");
      } else if (marks >= 45 && marks < 50) {
        System.out.println("D");
      } else if (marks >= 50 && marks < 60) {
        System.out.println("C");
      } else if (marks >= 60 && marks < 80) {
        System.out.println("B");
      } else {
        System.out.println("A");
      }
    } else {
      System.out.println("Enter valid marks");
    }
  }
}

[ApoorvaSinha]

If-else

package Discussion83;

import java.util.Scanner;

public class Ques1 {

	public static void main(String[] args) {
		// TODO Auto-generated method stub
		Scanner sc =new Scanner(System.in);
        System.out.println("Enter the Mark:");
        int mark=sc.nextInt();
        char grade;
        if(mark<25){
            grade='F'; 
        }
        else if(mark>=25 && mark<45){
            grade='E'; 
        }
        else if(mark>=45 && mark<50){
            grade='D';
        }
        else if(mark>=50 && mark<60){
            grade='C';
        }
        else if(mark>=60 && mark<80){
            grade='B';
        }
        else{
            grade='A';
        }
        System.out.println("Grade: " +grade);
        sc.close();
	}

}

Multiple if

package Discussion83;

import java.util.Scanner;

public class Ques2 {

	public static void main(String[] args) {
		// TODO Auto-generated method stub
		Scanner sc =new Scanner(System.in);
        System.out.println("Enter the Mark:");
        int mark=sc.nextInt();
        char grade = '\0';
        if(mark<25){
            grade='F'; 
        }
        if(mark>=25 && mark<45){
            grade='E'; 
        }
        if(mark>=45 && mark<50){
            grade='D';
        }
        if(mark>=50 && mark<60){
            grade='C';
        }
        if(mark>=60 && mark<80){
            grade='B';
        }
        if(mark>=80){
            grade='A';
        }
        System.out.println("Grade: " + grade);
        sc.close();
	}

}

[vshvandana]

import java.util.*;

public class task83 {
    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        System.out.println("Enter the marks:");
        int m = sc.nextInt();
        if (m > 80)
            System.out.println("A");
        else if (m > 60 && m <= 80)
            System.out.println("B");
        else if (m > 50 && m <= 60)
            System.out.println("C");
        else if (m > 45 && m <= 50)
            System.out.println("D");
        else if (m > 25 && m <= 45)
            System.out.println("E");
        else
            System.out.println("F");
    }

}