Contoh Program Do While Bahasa C

#include<stdio.h>
int main()
{
int a;
char ulang;
do
{
printf("ANGKA : ");
scanf("%d",&a);
if(a%2==0)
{
printf("PLEASE TRY AGAIN! [YES/NO] : ");
scanf("%s",&ulang);
}
else
{
printf("SILAHKAN ULANG! [YA/TIDAK] : ");
scanf("%s",&ulang);
}
}
while(ulang=='y'||ulang=='Y');

system("pause");
}