c program for simple calculator using switch statement

#include<stdio.h>

#include<conio.h>

void main()

{

int a,b;

char op;

clrscr();

printf("CHOOSE THE OPERATOR\n+ Addition\n- Subtraction\n* Multiplication\n/ Division\n");

scanf("%c",&op);

printf("Enter two numbers:\n");

scanf("%d%d",&a,&b);

switch(op)

{

case '+':printf("%d+%d=%d",a,b,a+b);

break;

case '-':printf("%d-%d=%d",a,b,a-b);

break;

case '*':printf("%d*%d=%d",a,b,a*b);

break;

case '/':printf("%d/%d=%f",a,b,(float)a/b);

break;

default:printf("Invalid operator");

}

getch();

}