Computer Programming LIVE

First off, let’s define a factorial for those of you who don’t remember what a factorial of a number is. A factorial of any non-negative integer number “x” is the product of all of the positive integers less than and equal to “x”. This means that the factorial of 4 is 4*3*2*1 which is 24, and the factorial of 6 is 6*5*4*3*2*1 which is 720.

#include<stdio.h>
#include<math.h>

int main()
{

    int n,count=0,i=1;
    printf("Md.Mostafa Kamal\n");
    printf("\n\n\n enter n:  ");
    scanf("%d",&n);
do{
    count=count+n/(5*i);
    i*=5;
}
while(i<=n);
printf("No of zeros=%d",count);
return 0;
}