lab Exercises 1

201816040216/Lab1/Acount,h

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+// Lab 1: Account.h
+// Definition of Account class.
+
+class Account
+{
+public:
+   Account( int ); // constructor initializes balance
+   void Debit( int ); // add an amount to the account balance
+   /* write code to declare member function debit. */
+   int getBalance(); // return the account balance
+private:
+   int balance; // data member that stores the balance
+}; // end class Account
+

201816040216/Lab1/Acount.cpp

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+// Lab 1: Account.cpp
+// Member-function definitions for class Account.
+#include <iostream>
+using namespace std;
+
+#include "Account.h" // include definition of class Account
+
+// Account constructor initializes data member balance
+Account::Account( int initialBalance )
+{
+   balance = 0; // assume that the balance begins at 0
+
+   // if initialBalance is greater than 0, set this value as the
+   // balance of the Account; otherwise, balance remains 0
+   if ( initialBalance > 0 )
+      balance = initialBalance;
+
+   // if initialBalance is negative, print error message
+   if ( initialBalance < 0 )
+      cout << "Error: Initial balance cannot be negative.\n" << endl;
+} // end Account constructor
+
+// credit (add) an amount to the account balance
+void Account::Debit( int amount )
+{
+   balance = balance - amount; // add amount to balance
+   if(balance<0)
+   {
+       cout<<"Debit amout exceeded account balance."<<"\n";
+       balance=0;
+   }
+} // end function credit
+
+/* write code to define member function debit. */
+
+
+// return the account balance
+int Account::getBalance()
+{
+   return balance; // gives the value of balance to the calling function
+} // end function getBalance

201816040216/Lab1/AcountText,cpp

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+// Lab 1: AccountTest.cpp
+// Create and manipulate Account objects.
+#include <iostream>
+using namespace std;
+
+// include definition of class Account from Account.h
+#include "Account.h"
+
+// function main begins program execution
+int main()
+{
+   Account account1( 50 ); // create Account object
+   Account account2( 0 ); // create Account object
+
+   // display initial balance of each object
+   cout << "account1 balance: $" << account1.getBalance() << endl;
+   cout << "account2 balance: $" << account2.getBalance() << endl;
+
+   int withdrawalAmount; // stores withdrawal amount read from user
+
+   cout << "\nEnter withdrawal amount for account1: "; // prompt
+   cin >> withdrawalAmount; // obtain user input
+   cout << "\nsubtracting " << withdrawalAmount
+      << " from account1 balance\n\n";
+   /* write code to withdraw money from account1 */
+    account1.Debit(withdrawalAmount);
+   // display balances
+   cout << "account1 balance: $" << account1.getBalance() << endl;
+   cout << "account2 balance: $" << account2.getBalance() << endl;
+
+   cout << "\nEnter withdrawal amount for account2: "; // prompt
+   cin >> withdrawalAmount; // obtain user input
+   cout << "\nsubtracting " << withdrawalAmount
+      << " from account2 balance\n\n";
+   /* write code to withdraw money from account2 */
+     account2.Debit(withdrawalAmount);
+   // display balances
+   cout << "account1 balance: $" << account1.getBalance() << endl;
+   cout << "account2 balance: $" << account2.getBalance() << endl;
+} // end main

201816040216/Lab2/GradeBook.cpp

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+// Lab 2: GradeBook.cpp
+// Member-function definitions for class GradeBook.
+#include <iostream>
+using namespace std;
+
+// include definition of class GradeBook from GradeBook.h
+#include "GradeBook.h"
+
+// constructor initializes courseName and instructorName
+// with strings supplied as arguments
+GradeBook::GradeBook( string course, string instructor,string Ming )
+{
+   setCourseName( course ); // initializes courseName
+   setInstructorName( instructor ); // initialiZes instructorName
+   setInstructorMing(Ming);
+} // end GradeBook constructor
+
+// function to set the course name
+void GradeBook::setCourseName( string name )
+{
+   courseName = name; // store the course name
+} // end function setCourseName
+
+// function to retrieve the course name
+string GradeBook::getCourseName()
+{
+   return courseName;
+} // end function getCourseName
+
+/* write code to define a get member function for the instructor's name */
+void GradeBook::setInstructorName( string instructor )
+{
+    instructorName=instructor;// store the course instruct
+}// end function setCourseInstructor
+/* write code to define a set member function for the instructor's name */
+string GradeBook::getCourseInstructor()
+{
+    return instructorName;
+}// end function getCourseInstructtor
+// display a welcome message and the instructor's name
+void GradeBook::setInstructorMing(string ming )
+{
+    instructorMing=ming;
+}// end function setInstructorMing
+
+string GradeBook::getInstructorMing()
+{
+    return instructorMing;
+}// end function getCourseInstructorMing
+void GradeBook::displayMessage()
+{
+   // display a welcome message containing the course name
+   cout << "Welcome to the grade book for\n" << getCourseName() << "!"
+      << endl;
+   /* write code to output the instructor's name */
+   cout<<"This course is presented by:"<<getCourseInstructor()<<" "<<getInstructorMing()<<"\n";
+} // end function displayMessage

201816040216/Lab2/GradeBook.h

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+// Lab 2: GradeBook.h
+// Definition of GradeBook class that stores an instructor's name.
+#include <string> // program uses C++ standard string class
+using namespace std;
+
+// GradeBook class definition
+class GradeBook
+{
+public:
+   // constructor initializes course name and instructor name
+   GradeBook( string, string ,string);
+   void setCourseName( string ); // function to set the course name
+   string getCourseName(); // function to retrieve the course name
+
+   /* write code to declare a get function for the instructor's name */
+   void setInstructorName( string );
+   /* write code to declare a set function for the instructor's name */
+   string getCourseInstructor();
+
+   void setInstructorMing(string);
+   string getInstructorMing();
+
+   void displayMessage(); // display welcome message and instructor name
+private:
+   string courseName; // course name for this GradeBook
+   string instructorName; // instructor name for this GradeBook
+   string instructorMing;//instructor Ming for this Gradebook
+}; // end class GradeBook

201816040216/Lab2/GradeBookText.cpp

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+// Lab 2: GradeBookTest.cpp
+// Test program for modified GradeBook class.
+#include <iostream>
+using namespace std;
+
+// include definition of class GradeBook from GradeBook.h
+#include "GradeBook.h"
+
+// function main begins program execution
+int main()
+{
+   // create a GradeBook object; pass a course name and instructor name
+   string courseinstructor,InstructorMing;
+   GradeBook gradeBook(
+      "CS101 Introduction to C++ Programming","Sam","Smith" );
+   // display welcome message and instructor's name
+   gradeBook.displayMessage();
+   cout<<"\n";
+   /* write code to change instructor's name and output changes */
+   cout<<"Changing instrutor name to";
+   cin>>courseinstructor;
+   cin>>InstructorMing;
+
+   gradeBook.setInstructorName(courseinstructor);
+   gradeBook.setInstructorMing(InstructorMing);
+   gradeBook.displayMessage();
+
+
+} // end main

201816040216/Lab3/Employee.cpp

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+// Lab 3: Employee.cpp
+// Employee class member-function definitions.
+#include <iostream>
+using namespace std;
+
+#include "Employee.h" // Employee class definition
+Employee::Employee(string name,string ming,int money)
+{
+    setEmployeename(name);
+    setEmployeeming(ming);
+    setEmployeemoney(money);
+}
+/* Define the constructor. Assign each parameter value to the appropriate data
+   member. Write code that validates the value of salary to ensure that it is
+   not negative. */
+
+/* Define a set function for the first name data member. */
+void Employee::setEmployeename(string name)
+{
+    Employeename=name;// store the Employee name
+}//end function setEmployeename
+/* Define a get function for the first name data member. */
+string Employee::getEmployeename()
+{
+    return Employeename;
+}//end function getEmployeename
+/* Define a set function for the last name data member. */
+void Employee::setEmployeeming(string ming)
+{
+    Employeeming=ming;// store the Employee ming
+/* Define a get function for the last name data member. */
+
+}
+string Employee::getEmployeeming()
+{
+    return Employeeming;
+}//end function getEmployeeming
+/* Define a set function for the monthly salary data member. Write code
+   that validates the salary to ensure that it is not negative. */
+void Employee::setEmployeemoney(int money)
+{
+    Employeemoney=money;// store the Employee money
+}//end function setEmployeemoney
+/* Define a get function for the monthly salary data member. */
+int Employee::getEmployeemoney()
+{
+    return Employeemoney;
+}//end function getEmployeemoney
+void Employee::displaymessage()
+{
+    cout<<getEmployeename()<<" "<<getEmployeeming()<<"; "<<"Yearly Salary:"<<getEmployeemoney()<<endl;
+}//end function Employee displaymessage
+
+int Employee::increasingmoney(int Employeemoney)
+{
+    Employeemoney1=Employeemoney*1.1;
+    return Employeemoney1;
+}//end function increasingmoney
+void Employee::displaymessage1()
+{
+    cout<<getEmployeename()<<" "<<getEmployeeming()<<"; "<<"Yearly Salary:"<<Employeemoney1<<endl;
+}
+
+

201816040216/Lab3/Employee.h

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+// Lab 3: Employee.h
+// Employee class definition.
+
+#include <string> // program uses C++ standard string class
+using namespace std;
+
+// Employee class definition
+class Employee
+{
+public:
+   /* Declare a constructor that has one parameter for each data member */
+   Employee(string,string,int);
+   /* Declare a set method for the employee's first name */
+   void setEmployeename(string);
+   /* Declare a get method for the employee's first name */
+   string getEmployeename();
+   /* Declare a set method for the employee's last name */
+   void setEmployeeming(string);
+   /* Declare a get method for the employee's last name */
+   string getEmployeeming();
+   /* Declare a set method for the employee's monthly salary */
+   void setEmployeemoney(int);
+   /* Declare a get method for the employee's monthly salary */
+   int getEmployeemoney();
+   void displaymessage();// display welcome message and instructor name
+   void displaymessage1();
+   int increasingmoney(int);
+private:
+   /* Declare a string data member for the employee's first name */
+   string Employeename;
+   /* Declare a string data member for the employee's last name */
+   string Employeeming;
+   /* Declare an int data member for the employee's monthly salary */
+   int Employeemoney,Employeemoney1;
+}; // end class Employee

201816040216/Lab3/EmployeeText.cpp

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+// Lab 3: EmployeeTest.cpp
+// Create and manipulate two Employee objects.
+#include <iostream>
+using namespace std;
+
+#include "Employee.h" // include definition of class Employee
+
+// function main begins program execution
+int main()
+{
+    int a=34500,b=37800;//set employee's yearly money
+
+    Employee employee1("Bob","Jone",a);
+    Employee employee2("Susan","Baker",b);
+   /* Create two Employee objects and assign them to Employee variables. */
+   cout<<"Employee1: ";
+    employee1.displaymessage();
+   /* Output the first name, last name and salary for each Employee. */
+   cout<<"Employee2: ";
+    employee2.displaymessage();
+   /* Give each Employee a 10% raise. */
+   cout<<endl;
+   cout<<"Increasing employee salaries by 10%"<<endl;
+   cout<<"\n";
+
+    employee1.increasingmoney(a);
+    cout<<"Employee1: ";
+   employee1.displaymessage1();
+   employee2.increasingmoney(b);
+   cout<<"Employee2: ";
+   employee2.displaymessage1();
+   /* Output the first name, last name and salary of each Employee again. */
+} // end main
+
+

201816040216/Lab4/Complex.cpp

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+// Lab 4: Complex.cpp
+// Member-function definitions for class Complex.
+#include <iostream>
+using namespace std;
+
+#include "Complex.h"
+
+Complex::Complex( double real, double imaginary )
+{
+   setComplexNumber( real, imaginary );
+} // end Complex constructor
+
+Complex Complex::add( const Complex &right )
+{
+   /* Write a statement to return a Complex object. Add
+      the realPart of right to the realPart of this Complex
+      object and add the imaginaryPart of right to the
+      imaginaryPart of this Complex object */
+      Complex t(0,0);
+      t.setComplexNumber( right.realPart + realPart, right.imaginaryPart + imaginaryPart);
+      return t;
+
+} // end function add
+
+Complex Complex::subtract( const Complex &right )
+{
+   /* Write a statement to return a Complex object. Subtract
+      the realPart of right from the realPart of this Complex
+      object and subtract the imaginaryPart of right from
+      the imaginaryPart of this Complex object */
+      Complex temp(0,0);
+      temp.setComplexNumber( realPart - right.realPart,imaginaryPart -  right.imaginaryPart);
+      return temp;
+} // end function subtract
+
+void Complex::printComplex()
+{
+   cout << '(' << realPart << ", " << imaginaryPart << ')';
+} // end function printComplex
+
+void Complex::setComplexNumber( double rp, double ip )
+{
+   realPart = rp;
+   imaginaryPart = ip;
+} // end function setComplexNumber