std:: system ... Calls the host environment's command processor (e.g. /bin/sh, cmd.exe) with the parameter command. Returns an implementation-defined value (usually the value that the invoked …

On POSIX systems, the return value can be decomposed using WEXITSTATUS and WSTOPSIG. The related POSIX function popen makes the output generated by command available to the caller. …

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This header was originally in the C standard library as <stdlib.h>. This header provides miscellaneous utilities. Symbols defined here are used by several library components.

C++ reference C++

Library contents The C++ standard library provides definitions for the entities and macros described in the synopses of the C++ standard library headers, unless otherwise specified. All library entities …

On Windows, system_category() typically maps some Windows error codes to POSIX ones. On POSIX, system_category() tends to be equivalent to std::generic_category () except for the name.

This is a reference of the core C++ language constructs.

C reference C

The current path as returned by many operating systems is a dangerous global variable. It may be changed unexpectedly by third-party or system library functions, or by another thread. Example Run …