### IBM C and C++ Compilers Functions and Macros: "P, Q"

Function/Macro | #include file | ANSI/ISO | ANSI/ISO 93 | POSIX | XPG4 | Extension | Subsystem
__parmdwords | <stdlib.h> |  |  |  |  | X |
perror | <stdio.h> | X |  | X | X |  |
pow | <math.h> | X |  | X | X |  |
printf | <stdio.h> | X |  | X | X | X | X
putc | <stdio.h> | X |  | X | X |  |
_putch | <conio.h> |  |  |  |  | X |
putchar | <stdio.h> | X |  | X | X |  |
putenv | <stdlib.h> |  |  |  | X | X |
puts | <stdio.h> | X |  | X | X |  |
putwc | <wchar.h> |  | X X |  | X X |  |
putwchar | <wchar.h> |  | X |  | X |  |
qsort | <stdlib.h> <search.h> | X |  | X | X | X | X

IBM C and C++ Compilers Functions and Macros