| Function/Macro | #include file | ANSI/ISO | ANSI/ISO 93 | POSIX | XPG4 | Extension | Subsystem |
| gamma | <math.h> | ||||||
| gcvt | <stdlib.h> | X | X | ||||
| getc | <stdio.h> | X | X | X | |||
| _getch | <conio.h> | X | |||||
| getchar | <stdio.h> | X | X | X | |||
| _getche | <conio.h> | X | |||||
| _getcwd | <direct.h> | X | X | ||||
| _getdcwd | <direct.h> | X | X | ||||
| _getdrive | <direct.h> | X | |||||
| getenv | <stdlib.h> | X | X | X | |||
| getpid | <process.h> | X | X | ||||
| gets | <stdio.h> | X | X | X | |||
| getsyntx | <variant.h> | X | |||||
| <stdlib.h> <builtin.h> |
X X |
||||||
| getwc | <wchar.h> | X | X | ||||
| getwchar | <wchar.h> | X | X | ||||
| gmtime | <time.h> | X | X | X |
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IBM C and C++ Compilers Functions and Macros