Switch example with do while (C++)

Switch example with do while

Switch allows selection among multiple sections of the code depending on the value in the switch statement.

main() function uses a do while loop to call mainFunction() again and again.

mainFunction() calls the switchFunction().

switchFunction() takes 3 parameters:

num1 takes the first number.

num2 takes the second number.

operation takes the operation to be performed on both numbers.

Following code demonstrates basic operations on 2 integer values using switch statement.

Code

#include "stdafx.h"

#include "iostream"

#include "conio.h"

using namespace std;

void switchFunction(double num1,double num2,char operation)

{

       switch(operation)

       {

        case '+':{cout<<num1<<" + "<<num2<<" = "<<num1+num2<<endl;break;}

        case '-':{cout<<num1<<" - "<<num2<<" = "<<num1-num2<<endl;break;}

        case '*':{cout<<num1<<" * "<<num2<<" = "<<num1*num2<<endl;break;}

        case '/':{cout<<num1<<" / "<<num2<<" = "<<num1/num2<<endl;break;}

        case 'A':

                 {

                     cout<<num1<<" + "<<num2<<" = "<<num1+num2<<endl;

                    cout<<num1<<" - "<<num2<<" = "<<num1-num2<<endl;

                    cout<<num1<<" * "<<num2<<" = "<<num1*num2<<endl;

                    cout<<num1<<" / "<<num2<<" = "<<num1/num2<<endl;

                    break;

                 }

       default:

               cerr<<"NOT A VALID OPERATION"<<endl;

       }

}

void mainFunction()

{

            double num1=0,num2=0;

            char operation;

            cout<<"ENTER FIRST NUMBER  > ";

            cin>>num1;

            cout<<"ENTER SECOND NUMBER > ";

            cin>>num2;

          

            cout<<"ENTER OPERATION"<<endl;

            cout<<"+ FOR ADDITION"<<endl;

            cout<<"- FOR ADDITION"<<endl;

            cout<<"* FOR ADDITION"<<endl;

            cout<<"/ FOR ADDITION"<<endl;

            cout<<"A FOR ADDITION"<<endl;

            cin>>operation;

            switchFunction(num1,num2,operation);

}

int main()

{

char option;

       do

       {

        system("cls");

        mainFunction();

        cout<<"WANNA CONTINUE AGAIN FOR NEW INPUT (Y/N) ? ";

        cin>>option;

       }while(option=='Y'|option=='y');

          

       _getche();

return 0;

}

Output

ENTER FIRST NUMBER  > 6

ENTER SECOND NUMBER > 5

ENTER OPERATION

+ FOR ADDITION

- FOR ADDITION

* FOR ADDITION

/ FOR ADDITION

A FOR ADDITION

A

6 + 5 = 11

6 - 5 = 1

6 * 5 = 30

6 / 5 = 1.2

WANNA CONTINUE AGAIN FOR NEW INPUT (Y/N) ?

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