stack underflow

[RSTR]

I'm creating a program that works fine in long integer.

however, after 16 , the output becomes too big for long integer.

I tried switching to float or double, but during run time I get a stack underflow error.

can someone tell me how to fix this?


rstr@spacemail.com

 

[mbaranski]

Can you post your code? That would be very helpful. You really didn't give enough information to solve your problem.

As always, I hope that helped!

Disclaimer:
Beware: Studies have shown that research causes cancer in lab rats.

 

[RSTR]

Sorry, I thought that would happen. (was in a hurry.)
Here goes.....

/* Finds the factorial of a number */

#include <iostream.h>
typedef long int lint;
lint factorial(lint x, lint xdown);
int main()
{
lint x;
lint y;
int choice;
start:
cout << &quot;which number do you want to find the factorial of?: &quot;;
cin >> x;


y = factorial(x, x-1);


cout << &quot;\nthe factorial of &quot; << x << &quot; is &quot; << y;

cout <<&quot;\ndo you want to play again? (0 for no, 1 for yes): &quot;;
cin >> choice;

if(choice == 0)
return 0;
else
goto start;

return 0;
}

lint factorial(lint x, lint xdown)
{
if (xdown < 1)
return x;
else
factorial(x*xdown,xdown - 1);
}


Using function recursion, the program finds the factorial of a number ... (6 * 5 * 4 * 3 ....)

But, after the number 16, the return number becomes too big for long integer, and flips over. When I put in float or double the program ends with &quot;stack underflow&quot; error.

I was wondering if there was a way around this
(is that enough info?) =-) RSTR


rstr@spacemail.com

 

[RSTR]

Actually, I'm sorry to have waisted your time.

I tried this on a different compiler, and it worked fine,
although I get an answer that looks like

3.55687e+014, Which I assume is scientific notation.

now my question is, is there a way to get the answer to not look like scientific notation?


rstr@spacemail.com