c++ n factorial program

[GSXdan]

How would someone go about writing a program to compute the n factorial of a number? (n factorial is written as n!)

n! = n * (n-1) * (n-2) * .. * 1 for values of n greater than or equal to 1
0! = 1

for example, 5! = 5*4*3*2*1 = 120

thanks ^dan

[doctorgonzo]

I'll give it a shot:

PHP Code:

int main(int argc, char *argv[])
{
    int numb;
    int fact;
    cout<<"Enter a number:"<<endl;
    cin>>numb;
    if(!numb) {        //Check to see if numb is 0
        cout<<"0! is 1";
        return 0;
    }
    fact=1;
    while(numb)     //Do while numb is not 0
    {
        fact*=numb;
        numb--;
    }
    cout<<fact;    
    return 0;
} 


[GSXdan]

As always doctorgonzo, thank you very much for a very timely response, and of course, it works

thanks again ^dan