Compute Factorial of a Number

/* C++ Program to compute factorial of a number */
#include<bits/stdc++.h>  
using namespace std;  
int main()  
{  
    int num;  
    //Scan the number  
    cout<<"Enter the number:";  
    cin>>num;  
      
    //Computing factorial  
    int factorial = 1;  
    for(int i = num ; i >= 1 ; i--)  
    {  
        factorial = factorial * i;     
    }  
      
    //Printing the factorial  
    cout<<"Factorial of "<<num<<" is "<<factorial;  
}