I have a very simple c++ source like this:
#include <iostream>
int main() {
srand(time(NULL));
}
I am using g++ to compile like this :
g++ ./test.cpp
but it successfully compiles despite the fact that time() function is defined in ctime and it is not included with #include
my professor at university runs the code with visual studio (vc++) but he is unable to run the code without including ctime
Am I missing something here ?
by the way my g++ version is :
g++ (Ubuntu 11.2.0-7ubuntu2) 11.2.0
first of all explicitly include what you need,
(thanks to darkblueflow for pointing it out)
secondly
#include order matters,
believe or not they can shadow declaration, just switch if first case doesn't work
#include <cstdlib>
#include <ctime>
// differs from
#include <ctime>
#include <cstdlib>
// in some aspects
your best shot is to include headers explicitly and keep this in mind this good luck