cstdlib.h is a standard header file.
cstdlib.h denotes 'C standard library' and it is the C++ header file version of the C header file 'stdlib.h'.
cstdlib.h contains the definitions of the following functions (incomplete list, taken from the GNU ISO C++ library's cstdlib.h supplied with Qt Creator 1.3.1):
- std::abort
- std::abs
- std::atexit
- std::atof
- std::atoi
- std::atol
- std::bsearch
- std::calloc
- std::div
- std::exit
- std::free
- std::getenv
- std::labs
- std::ldiv
- std::malloc
- std::mblen
- std::mbstowcs
- std::mbtowc
- std::qsort
- std::rand
- std::realloc
- std::srand
- std::strtod
- std::strtol
- std::strtoul
- std::system
- std::wcstombs
- std::wctomb