C ispunct() function

C ispunct(int ch)

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

Syntax:

int ispunct(int argument);

ispunct() Parameters:

Return value from ispunct()

• The ispunct() function returns non-zero if ch is a punctuation character; otherwise, returns 0.

Example-1: Program to check punctuation

#include <stdio.h>
#include <ctype.h>
int main()
{
    char ch;
    ch = ':';
    printf("\nIf %c is punctuation character or not? %d", ch, ispunct(ch));
    ch = ',';
    printf("\nIf %c is punctuation character or not? %d", ch, ispunct(ch));
    ch = 'A';
    printf("\nIf %c is punctuation character or not? %d", ch, ispunct(ch));
    return 0;
}

Output:

If : is punctuation character or not? 16
If , is punctuation character or not? 16
If A is punctuation character or not? 0

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