C isprint() function

C isprint(int ch)

The isprint() function is used to check whether a character is a printable character or not. The function is defined in the ctype.h header file.

Syntax:

int isprint( int arg );

isprint() Parameters:

Return value from isprint()

• The isprint() function returns non-zero if ch is a printable character; otherwise returns 0.

Example: C isprint() function

#include <stdio.h>
#include <ctype.h>
int main()
{
    char ch;
    ch = 'y';
    printf("\nIf %c is printable character or not? %d", ch, isprint(ch));
    ch = '\t';
    printf("\nIf %c is printable character or not? %d", ch, isprint(ch));
    ch = 'A';
    printf("\nIf %c is printable character or not? %d", ch, isprint(ch));
}

Output:

If y is printable character or not? 2
If       is printable character or not? 0
If A is printable character or not? 1

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