Leap Year in C

#include <stdio.h>
#include<conio.h>
void main()
{
int x;
printf("Enter the year:");
scanf("%d",&x);
if (x%400 == 0)
             printf("%d is a leap year",x);
        else if (x%100 == 0)
             printf("%d is not a leap year",x);
        else if (x%4 == 0 )
            printf("%d is a leap year",x);
        else
           printf("%d is not a leap year",x);
        getch();
}