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Lit Bien la Description \/\/\/\/\/\/\/\/\/\/\/\/\/ Bonjour les amis aujourd'hui un petit recrutement pour moi et pour ma team °. ° je...
+ZORTEK mon serveur est encore fermé et pendant encore un petit moment désolé et tu pourra passé modérateur pas plus pour le moment que sous candidature et le grade admin et le mien donc non pour ce grade
+Marches Thomas bonjour thomas avant toute chose a tu une team et est tu payant ou free(gratuit)
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... From Harvard and the base case condition for calculating a factorial
recursively in the example provided in the video is *if (n == 1) return 1;*?
Just as a reminder, *0! == 1* as well, and this function will fail and
result in a stack overflow if *factorial(0)* was called because the base
case condition is not proper. It should really be something like *if (n <
2) return 1;*.
+Davis Benny Tested with gcc, the following code, and my results still stand. Not sure what you've been trying, but you'd better re-check that.#include <stdio.h>int f(int n){ if (n == 1) return 1; return n * f(n - 1);}int main(void){ f(0); return 0;}
+Davis Benny I don't think you've tested this well enough in that case then. What do you think happens when we call factorial(1)? No recursive call, the function returns 1 immediately. Now what about 2? The function returns n * factorial(1), which is a recursive call (n is 1 in that call), so we end up with 2 * 1 == 2. The whole point is to get it down to 1. It should be clear without running the code that calling factorial(n) where n <= 0 will result in it calculating factorial(0), factorial(-1), and so on... Eventually resulting in a datatype overflow, and the stack space being used here should probably result in a stack overflow. Case closed, the code demonstrated is flawed and does not calculate 0! (the factorial of 0) properly...
amazing videos. Thanks a lot. As a side-note, I think to write a factorial
function it's better to use looping since there is a limit to recursion
depth.
+sadhak Only a handful of enviroments will provide you a recursion depth limit there is no limit on how many times we can iterate or recurse it's a really basic explanation and by making it this understandable we are missing the importance of stack in recursion and its understanding. She did a small presentation on stacking graphic one.. but it missed some depth I must say.