session 5-INHERITANCE.md

1).Examination

#include <iostream>

using namespace std;

class A{ 
public:
  int x;
};

class B:public A{ 
public:
B()
{
    cin >> x;
}
};
class C{
public:
  int y;
  C(){
    cin >> y;
}
};
class D:public B,public C
{
  public:
    void sum()
    {
      int sum;
      sum=x+y;
       cout << "Sum= " << sum << endl;
    }
};

int main() {
   D obj;
   obj.sum();
   return 0;
 }

2).Payroll

#include <iostream>
using namespace std;
class SingleInheritance{
public:
    string name, gender;
    int salary, age;
    void getDetails(){
    cin >> name >> gender >> age >> salary;
    }
    };

    class inheritedclass:public SingleInheritance{
    public:
    void display(){
        cout << "Name=" << name << "\nGender=" << gender << "\nAge=" << age << "\nSalary=" << salary << endl;
    }
  };

int main() {
inheritedclass tc;
  tc.getDetails();
  tc.display();
return 0;
}

3).Counselling

#include <iostream>

using namespace std;

class Student{
   public:
  virtual void getDetails()=0;
  virtual void displayDetails()=0;
  };

  class StudentDetails:public Student{
  string fname, mname;
  float num;
  public:
 void getDetails(){
     cin >> fname >> mname >> num;
  }
  void displayDetails(){
      cout << fname << endl << mname << endl << num << endl;
  }
};

int main() {
  StudentDetails sd;
  sd.getDetails();
  sd.displayDetails();

  return 0;
}

4).Rectangle

#include <iostream>
using namespace std;
class Area
{
  public:
  int getArea(int length, int berth)
  {
    return length*berth;
  }
  };
  class Perimeter
  {
  public:
  int getPerimeter(int length, int berth)
  {
  return length+length+berth+berth;
  }
  };
  class Rectangle:public Area,public Perimeter
  {

  };
  int main() {
  Rectangle rt;
  int l,b;
    cin>>l>>b;
    cout<<rt.getArea(l,b)<<endl;
    cout<<rt.getPerimeter(l,b)<<endl;
  return 0;
  }

5).Student and Sports

#include <iostream>

using namespace std;
class student
{
    public:
    int roll_no,mark_1,mark_2;
    void get()
    {
      cin>>roll_no;
      cin>>mark_1;
      cin>>mark_2;
    }
  };
  class sports
  {public:
  int sport_mark;
  void getsm()
  {
      cin>>sport_mark;
  }
  };
  class statement:public student,public sports
  {
  public:
  int total,average;
  void display()
  {
    total=mark_1+mark_2+sport_mark;
    average=(mark_1+mark_2+sport_mark)/3;
    cout<<roll_no<<endl;
    cout<<total<<endl;
    cout<<average;
    }
    };
    int main()
    {
        statement obj;
        obj.get();
        obj.getsm();
        obj.display();
        return 0;
    }

6).Single Level Inheritance - Rectangle

#include <iostream>

using namespace std;
class A
{
    public:
    int a;
    void getxval()
    {
      cin>>a;
    }
};
class B
{
    public:
    int b;
    void getyval()
    {cin>>b;
    }
    };
    class C:public A,public B
    {
  int c;
  public:
  void sum()
  {
    c=a+b;
    cout<<"Sum = "<<c;
  }
  void mul()
  {
    c=a*b;
    cout<<"\nProduct="<<c;
  }
  };
  int main()
  {
     C obj;
    obj.getxval();
    obj.getyval();
    obj.sum();
    obj.mul();
    return 0;
  }

7).Payslip Generation

#include<iostream>

using namespace std;
class c1
{
  public:
  int length, breadth;
  c1()
  {
    cin>>length>>breadth;
  }

  };
  class c2:public c1
  {
  public:
    void area(int length,int breadth)
    {
      cout<<2*(length+breadth);
    }
    };
    int main() {
    c2 one;
      one.area(one.length,one.breadth);

    return 0;
    }

8).Square and cube

#include <iostream>

using namespace std;
class Number
{
  public:
  int n;
  void getNumber()
  {
      cin>>n;
  }
  void getSquare()
  {
      cout<<n*n<<endl;
  }
  void getCube()
  {
      cout<<n*n*n<<endl;
  }
  };
  class Square:public Number
  {
      public:
      Square()
      {
        getNumber();
        getSquare();
      }
  };
  class Cube:public Number
{
  public:
  Cube()
  {
    getNumber();
     getCube();
   }
};
int main()
{
  Square objS;
  Cube objC;
  return 0;
}

9).Cost of Pen

#include <iostream>
using namespace std;

class A{protected:int a;
public:void display(){cin>>a;}
};
class B{protected:int b;
public:void display(){cin>>b;}
};
class C:public A,public B{public:
void display(){}
void show(){cout<display();
B *bb;
bb=&sample;
bb->display();
sample.display();
sample.show();
return 0;}

10).Programmer Information

  #include <iostream>
  using namespace std;
  class person
  {
    public:
      int age;
      char name[20];
      char gender[10];

      void getdata()
      {
          cin>>name;
           cin>>age;
          cin>>gender;
      }
      void display()
      {
          cout<<"Name: "<<name<<endl;
          cout<<"Age: "<<age<<endl;
          cout<<"Gender: "<<gender<<endl;
      }
      };
    class employee:public person
    {
    public:
      char n[10];
      int salary;

      void getdata()
      {
        cin>>n;
        cin>>salary;
      }

    void display()
    {
      cout<<"Name of Company: "<<n<<endl;
      cout<<"Salary: Rs."<<salary<<endl;
    }
    };

    class programmer:public employee
    {
    public:
    int pl;
    void getdata()
    {
      cin>>pl;
    }

    void display()
    {
        cout<<"Number of programming language known: "<<pl<<endl;
    }
    };
    int main()
    {
        person obj1;
        employee obj2;
        programmer obj3;
        obj1.getdata();
        obj1.display();
        obj2.getdata();
        obj2.display();
        obj3.getdata();
        obj3.display();
        return 0;
   }

11).Percentage of Student

  #include <iostream>

  using namespace std;
  class AddData
  {
     public:
     int mark1,mark2;
      void accept_details()
      {
           cin>>mark1>>mark2;
       }
  };
  class sports
  {
    public:
      int mark3;
      void get()
      {
        cin>>mark3;
       }
      };
  class Total : public AddData,public sports
  {
    public:
      int d;
      void total_of_three_subjects()
      {
          d=(mark1+mark2+mark3)/3;
      }
   
    };
    class Percentage : public Total
    {
    public:
      int e;
      void calculate_percentage()
      {
        e=(mark1+mark2+mark3)/3;
      }
      void show_result()
      {
          cout<<e;
      }
    };
    int main()
    {   
         Percentage p;
         p.accept_details();
         p.get();
         p.total_of_three_subjects();
         p.calculate_percentage();
         p.show_result();
         return 0;
  }

12).Bio

  #include <iostream>
using namespace std;
class student
{
    public:
    int rollno,mark1,mark2;
    void get()
    {
        cin>>rollno>>mark1>>mark2;
    }
    };
    class sports
    {   
        public:
        int mark3;
        void get1()
        {
            cin>>mark3;
        }
        };
        class statement:public student,public sports
        {
        public:
        void display()
    {
    cout<<"Roll No:"<<rollno<<endl;
    cout<<"Total:"<<mark1+mark2+mark3<<endl;
    cout<<"Average:"<<(mark1+mark2+mark3)/3<<endl;
    }
    };
    int main()
    {
        statement obj;
        obj.get();
        obj.get1();
        obj.display();
        return 0;
    }

13).Interface for Rectangle

  #include <iostream>

  #include <iomanip>
  using namespace std;
  class Area
  {
      public:
     float getArea(float l,float h);
  };

  float Area::getArea(float l,float h)
  {
    return l*h;
  }

  class Perimeter
  {
    public:
      float getPerimeter(float x,float y)
      {
          return (float)2*(x+y);
       }
  };

  class Rectangle:public Area,public Perimeter
  {

  };
int main()
{
    float l,b;
    Rectangle rt;
    cin>>l>>b;
    cout<<rt.getArea(l,b)<<endl;
    cout<< std::fixed << setprecision(2) << rt.getPerimeter(l,b);
    return 0;
}

14).Bank

#include <iostream>
#include <math.h>
using namespace std;

class Customer {

public:
char s[100];
public:
void display()
{
cin>>s;
}
};

class Bank{
public:
long num1, num2, num3;
void display()
{
cin>>num1>>num2>>num3;
}
};

class Account:public Customer,public Bank
{
public:
char s[100];
long num1,num2,num3;
void display()
{
cin>>s;
cin>>num1>>num2>>num3;
cout<<"Customer Name="<<s<<endl;
cout<<"Customer Id="<<num1<<endl;
cout<<"Account No="<<num2<<endl;
cout<<"Account Balance="<<num3<<endl;
//Interest Calc

double y = num3;
y = floor((y * 100) + 0.5)/100;
y = y*12*3;
int interest = (int)y;
printf("Interest=%d", interest/100);
}
};

int main() {


Account user;
user.display();
}

15).Multilevel Inheritance for Student Marklist

    #include <iostream>
    #include<string.h>
    using namespace std;
    class student
    {
        public:
        char fname[20],lname[20];
        int phno;

        void getdata()
        {
            cin>>fname;
            cin>>lname;
            cin>>phno;
        }
        void display()
        {
            cout<<"First Name: "<<fname<<endl;
            cout<<"Last Name: "<<lname<<endl;
            cout<<"Phone: "<<phno<<endl;
        }

        };

        class grade:public student
        {
        public:
            char g[5];
            int score;

            grade()
            {
            strcpy(g,"O");
            score=0;
                }


            void calculate()
            {
            cin>>score;
                if (score <40)
                    strcpy(g,"D");
                else if(score<=40 && score<60)
                    strcpy(g,"C");
                else if(score<=60 && score<75)
                        strcpy(g,"B");
                else if(score<=75 && score<90)
                        strcpy(g,"A");
                else
                        strcpy(g,"O");
            }
            void disp()
            {   
            cout<<"Grade: "<<g<<endl;
            }
             };
       
         
        int main() {
        grade o;
                 o.getdata();
                 o.display();
                o.calculate();
                o.disp();
        return 0;
    }

16).friends in maths tution

#include <iostream>
using namespace std;

class A{
public:
int a;
void display(int a)
{
    cin>>a;
}
};

class B{
public:
int b;
void display(int b){
cin>>b;
}
};

class C:public A,public B
{
public:
int a, b;
void display()
{
cin>>a>>b;
cout<<a*b<<endl;
}
}sample;

int main()
{
sample.display();
return 0;
}