C program to Create Simple Calculator Using Switch case ?

Q:- Write a C program to Create Simple Calculator Using Switch case ?

      Input

        #include<stdio.h>

        #include<conio.h>

        main()

   {

int a,b,c=0,d=0;

clrscr();

printf(“Enter Two Number =”);

scanf(“%d%d”,&a,&b);

printf(“\n Operation Choices\n”);
printf(“\n Press 1 for Sum”);

printf(“\n Press 2 for Subtraction”);

printf(“\n Press 3 for Multiplication”);

printf(“\n Press 4 for Exit”);

scanf(“%d”,&c);

switch(c)

{

case 1: d=a+b;

break;

case 2: d=a-b;

break;

case 3: d=a*b;

break;

case 4: exit();

break;

default : printf(“Invalid Input!!!!!!!!”);

}

printf(“\n\n Result = %d”,d);

getch();

    }

Output

Enter Two Numbers = 10

20

Operation Choices 1

Result = 30