getenv

 

C

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Program support utilities

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abort exit quick_exit (C++11) _Exit (C++11)	atexit at_quick_exit (C++11) EXIT_SUCCESS EXIT_FAILURE
Communicating with the environment
system	getenv
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jmp_buf

 

Defined in header <stdlib.h>
const char *getenv( const char *env_var );

Searches for an environmental variable with name env_var in the host-specified environment list and returns information associated with it. The set of environmental variables and methods of altering it are implementation-defined.

Parameters

env_var

-

null-terminated character string identifying the name of the environmental variable to look for

Return value

character string identifying the value of the environmental variable or NULL if such variable is not found.

See also

C++ documentation for getenv