Factorial

#include <cstdlib>
#include <iostream>

using namespace std;

int main(int argc, char *argv[])
{  
    long num,x,product=1;
    cout<<"Enter Number : ";
    cin>>num;
    for(x=1;x<=num;x++){
                        product*=x;
                        }
    cout<<"\n\n\tFactorial of "<<num<<" is : "<<product<<"\n\n\n";
    system("PAUSE");
    return EXIT_SUCCESS;
}

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