PROGRAM:
#include <stdio.h>
int main()
{
long long n;
int count = 0;
printf("Enter an integer: ");
scanf("%lld", &n);
while(n != 0)
{
n /= 10;
++count;
}
printf("Number of digits: %d", count);
}
OUTPUT:
Enter an integer: 3452 Number of digits: 4