#include <stdio.h> void main() { int a; int c,d; printf(" 1:+ 2:- 3:* 4:/ "); printf("enter control "); scanf("%d",&a); printf("enter num1 and num2 "); scanf("%d%d",&c,&d); switch (a) { case 1: c=c+d; printf("the result is %d ",c); break; case 2: c=c-d; printf("the result is %d ",c); break; case 3: c=c*d; printf("the result is %d ",c); break; case 4: c=c/d; printf("the result is %d ",c); break; default : printf ("the enter is fault"); } }