Thread: knowledge of programming Implement

I am last year computer science student. I have little bit knowledge of C programming. I want to know about the isgraph() function. I want to know how can I Implement the isgraph() function in C. any idea would be highly appericated!!!

The following example of the isgraph() function can explains you the functioning of the isgraph() function :

Code:

#include <stdio.h>
#include <ctype.h>
char ch[] = {'C', 0x09, ' ', 0x7d};
#define SIZE sizeof( ch ) / sizeof( char )
void main()
  {
    int k;
    for( k = 0; k < SIZE; k++ ) {
      printf( "Char %c is %sa printable charactern",
        ch[k],
        ( isgraph( ch[k] ) ) ? "" : "not " );
    }
  }

Output:

Code:

Char C is a printable character
Char     is not a printable character
Char   is not a printable character
Char b is a printable character