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Program to find Number of Digits in a Number's Factorial

By Viksto
#include <math.h>
#include <stdio.h>
void main() //can be replaced with int main, i prefer void main
{
    int i =1,j;
    printf("Enter the Number: ");
    scanf("%d",&j);
    double k = 0,l = log(10);
    for(;i<=j;i++)
  {
        k = k + (log(i)/l);
    }
    k = (int) (k+0.5);
    printf("\n NOD: %f",k+1);
}

Source:  http://inder-gnu.blogspot.com/2009/09/find-number-of-digits-in-number.html

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