Locates the first occurrence in the string pointed to by wstr1
    of the sequence of wide characters in the string pointed to by
    wstr2.

    Format

      #include  <wchar.h>

      wchar_t *wcswcs  (const wchar_t *wstr1, const wchar_t *wstr2);

  Additional Information (explode) :

• Function Variants
• Arguments
• Return Values
• Example