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C++ on Linux not recognizing commands like exit() and printf()

Answer 1

+3 A:

Recent versions of GCC have gotten stricter in what responsibilities the programmer needs to fulfill. Include the cstdlib, cstdio, etc. header and access these functions from the std namespace.

Ignacio Vazquez-Abrams 2010-10-18 04:50:56

#include <sys/wait.h>#include <iostream>using namespace std;This is the current header. Somehow it works with just this on other Linux OS, and I need to find out how. Adding extra headers to this is not an option at the moment.

Max 2010-10-18 05:06:19

Then compiling it under recent versions of GCC is *also* not an option at the moment. Your call.

Ignacio Vazquez-Abrams 2010-10-18 05:08:34

Hmm, alright. Is there any way to circumvent this? Maybe install something somewhere or change some parameters? Do you have any idea between what versions of gcc this change occurred?

Max 2010-10-18 05:11:26

I don't know why you'd want to circumvent the standards. I mean, that just sounds silly... http://gcc.gnu.org/gcc-4.3/porting_to.html http://gcc.gnu.org/gcc-4.4/porting_to.html

Ignacio Vazquez-Abrams 2010-10-18 05:12:29

Thank you very much. I know its kind of a weird thing to do, but it would make my life easier if I could, so I'd go out of my way to do it.

Max 2010-10-18 05:15:29

If you look at section 3 of the man pages, each page lists the header that a function is defined in. If you're using the function but not including the header (or the C++ equivalent), then, to put it in the vernacular, "ur doin it rong".

Ignacio Vazquez-Abrams 2010-10-18 05:19:51

Answer 2

+2 A:

If you are in need of a quick (and dirty) fix try:

using namespace std;

Also make sure you are including the appropriate io headers.

shuttle87 2010-10-18 05:00:05

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C++ on Linux not recognizing commands like exit() and printf()

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