Thread: HOw to find factorial of a given number in C++ Language?

Hi,

I am working on a program that asks a user to enter a # between 1 to 50 and finds the factorial of that. It uses recursive function to find it.

Here is what I got so far:

Code:

    include <iostream>

    using namespace std;

    //function prototypes

    int getNum();
    int fact(int);
    void printResult(int, int);


    int main()
    {
    int num;
    int ans;

    num = getNum();
    ans = fact(num);
    printResult(num, ans);

    cout << endl << endl;
    }
    int getNum()
    {
    	int num;
    	cout << "\nEnter a number:";
    	cin >> num;
    	return num;
    }
    int fact(int num)
    {
    	
    	if (num == 0)
    		return 1;
    	else 
    		return num * fact(num - 1);
    	
    }
    void printResult(int num, int ans)
    {
    	cout <<"\nfactorial of" << num << "is : " << ans;
    	
    }

Its not working, can some please help me solve this problem.

Thanks

edit: sorry, I have posted this again, because previously I accidentally posted on C section.