Thanks lots.
I understand clearly, why 24 instead of 1 is printed, now.
When y is 0 (y<1) finally, the program had stacked up
4*3*2*1 by doing factorial(y) repeatedly which is cool.
Multiply by 1 (return 1, when y<1), 4*3*2*1*1 gives
24. Very, very cool.
I had seen the stacking up with gdb program, which I
learned with no hassles. Now, I can't do without it in my
C programming lessons.
I got two birds so to say with one stone.
And with no flames, too, at all in the postings. Everyone is
professional.
Thanks a lot.
Beav
On 11/27/05, Beav Petrie <[EMAIL PROTECTED]> wrote:
Sluggers,
I run these codes I copied from a tutorial book.
The print out is 24, correct factorial of 4 (4*3*2*1).
But y is 0 (y < 1) finally and return value of 1 so how is it
24 instead of 1 is printed ?
Please help me understand. Many thanks.
Do not flame me, please. I am a newbie.
Beav
#include <stdio.h>
int factorial(int y)
{
if ( y < 1){
return 1;
}
else
{
return (y * factorial(y - 1));
}
}
int main(void)
{
printf("Factorial result: %d\n",factorial(4));
return 0;
}
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