#include<stdio.h> 

unsigned int factorial(unsigned int n) 
{ 
    int res = 1, i; 
    for (i = 2; i <= n; i++) 
        res *= i; 
    return res; 
} 
  
int main() 
{ 
    int num;
    printf("Enter the Number\n");
    scanf("%d",&num); 
    printf("Factorial of %d is %d \n", num, factorial(num)); 
    return 0; 
}