project 1

#include<stdio,h>                      /#
int main(vido)                             /# 
{
     int n;                                    /#
     int factorial(int n)                   /#


     scanf("%d",&n);                     /#
     printf("%d\n",factorial(n));     /#
  

     return 0;
}

int  factorial(int n)                       /#
{
    int i,fact=1;


    for(i=1;i<=n;i++)
       fact=fact*i;


    return fact;
}