int isgraph ( int c ); |
<cctype> |
Check if character has graphical representation
Checks if parameter c is a character with graphical representation. The characters with graphical representation are all those characters than can be printed (as determined by isprint) except for whitespace characters (like ' '), which are not considered isgraph characters.
For a detailed chart on what the different ctype functions return for each character of the standard ANSII character set, see the reference for the <cctype> header.
Parameters
- c
- Character to be checked, casted to an int, or EOF.
Return Value
A value different from zero (i.e.,
true) if indeed
c has a graphical representation as character. Zero (i.e.,
false) otherwise.
Example
/* isgraph example */
#include <stdio.h>
#include <ctype.h>
int main ()
{
FILE * pFile;
int c;
pFile=fopen ("myfile.txt","r");
if (pFile)
{
do {
c = fgetc (pFile);
if (isgraph(c)) putchar (c);
} while (c != EOF);
fclose (pFile);
}
} |
This example prints out the contents of "myfile.txt" without spaces and special characters, i.e. only prints out the characters that qualify as isgraph.
See also
| isprint | Check if character is printable (function) |
| isspace | Check if character is a white-space (function) |
| isalnum | Check if character is alphanumeric (function) |
