c++ program to find factorial of a number

#include <iostream>
using namespace std;                     Download C++ Factorial
int main() {

int num,f=1;
cout<<"Enter Number : ";
cin>>num;
for(int i=1;i<=num;i++)
  {
   f*=i;
  }
  
cout<<"Factorial :"<<f<<endl;
system("pause");
return 0;
}