Simple Calculator C program

Simple Calculator

Program:

# include <stdio.h>

# include<conio.h>

void main()

{

    int a,b,c,d=0,e;  //Declaring Variable.

    while(d==0)

   { printf("Enter two Numbers");   //For printing

      scanf("%d %d",&a,&b);   //For Input.

      e=0;

    while(e==0)

     { printf("\n1- For Addition");  //For printing

        printf("\n2- For Multiplication");  //For printing

        printf("\n3- For Division");  //For printing
    printf("\n4- For Subtraction");//For printing
       printf("\n5- Reenter the Numbers"); //For printing
        printf("\n6- To exit");  //For printing
        printf("\n Enter the Choice");  //For printing
        scanf("%d",&c);   //For Input.   

        switch(c)

      {

        case 1:{

                        printf("\n Addition : %d",a+b);  //For printing

                        break;

                      }

        case 2:{

                        printf("\n Multiplication : %d", a*b);  //For printing

                        break;

                       }

        case 3:{

                      printf("\n Division : %d",a/b);  //For printing

                      break;

                     } 

        case 4:{

                      printf("\n Subtraction : %d", a-b);  //For printing

                      break;

                     }

        case 5:{e=1;

                      break;

                     }

        case 6: {e=1;

                       d=1;

                       break;

                      }

        default:{

                       printf("Error! operator is not correct");  //For printing

                       break;

                       }

      }

  }

}

    getch();  //Getting a character or waiting for key press

}

Output: