simple calculator

simple calculator

#include <stdio.h>
#include <stdlib.h>

int main( void)
{
   int a,b,sum,option;
   printf("Welcome to C calculator\n");
   printf("Choose an option:\n");
   printf("add: 1 , Subtract: 2 , Multiply: 3\n");
   scanf("%d",&option);
   printf("Set first number:\n");
   scanf("%d",&a);
   printf("Set second number:\n");
   scanf("%d",&b);

   switch (option) {
       case 1: sum = a + b; printf("Result is: %d\n", sum); break;
       case 2: sum = a - b;printf("Result is: %d\n", sum); break;
       case 3: sum = a * b;printf("Result is: %d\n", sum); break;
       default: printf("Wrong option selected!"); break;
   }

   printf("\nPress Any Key To Continue...\n");
   getch();
   return 0;
}