C Program to find sum of 5 digits of a number using while loop

#include
#include
void main()
{
int n,i,a,sum=0;
printf("enter 5 digit no.");
scanf("%d",&n);
while(n<=5)
{
a=n%10;
n=n/10;
}
sum=sum+a;
printf("sum=%d",sum);
getch();
}