Even Odd using switch

#include<stdio.h>
#include<conio.h>

void main()

{

clrscr();

int num;

printf("Enter a Num:");

scanf("%d",&num);

int r = num%2==0                                                       //% is used to find remainder

switch(r)
{
case 1:
printf("Entered Number is Odd");
break;
case 0:
printf("Entered Number is Even");

}

getch();

}