The wcscat function is the wide-character equivalent of the strcat function. It copies the wide-character string pointed to by src, including the terminating L\0 character, to the end of the wide-character string pointed to by dest.
The strings may not overlap.
The programmer must ensure that there is room for at least wcslen(dest)+wcslen(src)+1 wide characters at dest.
wcscat returns dest.
ISO/ANSI C, UNIX98
strcat(3), wcsncat(3), wcscpy(3), wcpcpy(3)