#include <ctype.h>
Include dependency graph for iscntrl.c:
Functions | |
| int | iscntrl (int c) |
| Checks if the given character is a control character. More... | |
Function Documentation
◆ iscntrl()
| int iscntrl | ( | int | ch | ) |
Checks if the given character is a control character.
Checks if the given character is a control character. The following are examples of control character:
- codes (0x00-0x1F) and (0x7F)
The behavior is undefined if the value of ch is not representable as unsigned char and is not equal to EOF.
- Parameters
-
ch The character to classify
- Returns
- Non-zero value if the character is a control character, zero otherwise.
Referenced by bad_input(), and good_input().
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