C Programming/wchar.h/wcscmp

In C language ,the function wcscmp is included in header file wchar.h wcscmp is similar to strcmp i.e it is used to compare two strings.but the function wcscmp is used to compare wide character strings. If two wide character strings say s1 and s2 are to be compared. Then function wcscmp returns positive integer if s1 is greater than s2. It returns negative integer if string s2 is greater than s1. if two wide character strings i.e s1 and s2 are same then function returns 0.

syntax
int wcscmp(const wchar_t *s1, const wchar_t *s2);
 * 1) include 

Sample program which uses function wcsncmp
Output of program will be 'char is less than character '

as value of difference is negative.