C++ Wcsstr() Function

#include<iostream>
#include<cwchar>
using namespace std;
int main()
{
    wchar_t str[50], ch[20], *t;

    cout << "Enter A String : ";
    wcin >> str;
    cout << endl;

    cout << "Enter Sub-String : ";
    wcin >> ch;
    cout << endl;

    t = wcsstr(str, ch);

    wcout << "Sub-String is : " << t << endl;

    return 0;
}