ispunct

Determines whether a character is a punctuation character.

Example: Determine whether a character is a punctuation character:

public static int main (string[] args) {
	// Output: ````
	for (int i = 0; i <= 255; i++) {
		char c = ((char) i);
		assert (c.ispunct () == (c.isgraph () && !c.isalnum ()));
	}

	// Output: ``,!``
	string str = "Hello, world!";
	for (int i = 0; str[i] != '\0'; i++) {
		if (str[i].ispunct ()) {
            print (@"$(str[i])");
		}
	}
	print ("\n");
	return 0;
}

valac --pkg glib-2.0 char.ispunct.vala