Usage long

Defined in header <time.h>

Defined in header <time.h>

Defined in header <wchar.h>

Usage while loop:

A null-terminated wide string is a sequence of valid wide characters, ending with a null-character. Functions

Defined in header <ctype.h>

Defined in header <stdlib.h>

Defined in header <threads.h>

Defined in header <stdio.h>