#include #include /** get an environment variable **/ errno_t getenv_s(size_t * restrict len, char * restrict value, rsize_t maxsize, const char * restrict name) { __C_EXT(1, 201112L); return 0; } /*** The fn(getenv) function read the environment variable arg(name) from the host environment. ***/ /* UNSPECIFIED: - */ /* UNDEFINED: modifying the returned string */ /* IMPLEMENTATION: the set of environment variable names */ /* IMPLEMENTATION: the method of altering the environment */ /* LOCALE: - */ /* RETURN(NULL): the environment variable could not be found */ /* RETURN: the value of the requested environment variable */ /* CEXT1(201112) */