Appends a copy of one wide-character string to the end of a second string.
#include <wchar.h> wchar_t *wcscat ( wchar_t *dst, const wchar_t *src);
(OUT) Points to the null-terminated string to which to append a copy of another string.
(IN) Points to the null-terminated string to be copied.
Returns the value of dst.
The wcscat function appends a copy of the string pointed to by src (including the null-terminating character) to the end of the string pointed to by dst. The first character of src overwrites the NULL character at the end of dst.