isgraph
Synopsis
#include <ctype.h>
int isgraph(int c);
Status
Implemented
Conformance
IEEE Std 1003.1-2017
Description
The isgraph() functions shall test whether c is a character of class graph in the current locale.
The c argument is an int, the value of which the application shall ensure is a character representable as an
unsigned char or equal to the value of the macro EOF. If the argument has any other value, the behavior is
undefined.
Return value
The isgraph() function shall return non-zero if c is a character with a visible representation, otherwise shall
return 0.
Errors
No errors are defined.
Tests
Tested
Known bugs
None