The Open Group Base Specifications Issue 7
IEEE Std 1003.1-2008, 2016 Edition
Copyright © 2001-2016 The IEEE and The Open Group

#### NAME

> wcscat - concatenate two wide-character strings

#### SYNOPSIS

> ``#include <wchar.h>
> wchar_t *wcscat(wchar_t *restrict` ws1`, const wchar_t *restrict` ws2`);
> ``

#### DESCRIPTION

> [CX] The functionality described on this reference page is aligned with the ISO C standard. Any conflict between the requirements described here and the ISO C standard is unintentional. This volume of POSIX.1-2008 defers to the ISO C standard.

> The wcscat() function shall append a copy of the wide-character string pointed to by ws2 (including the terminating null wide-character code) to the end of the wide-character string pointed to by ws1. The initial wide-character code of ws2 shall overwrite the null wide-character code at the end of ws1. If copying takes place between objects that overlap, the behavior is undefined.

#### RETURN VALUE

> The wcscat() function shall return ws1; no return value is reserved to indicate an error.

#### ERRORS

> No errors are defined.

The following sections are informative.

#### EXAMPLES

> None.

#### APPLICATION USAGE

> None.

#### RATIONALE

> None.

#### FUTURE DIRECTIONS

> None.

#### SEE ALSO

> wcsncat

> XBD <wchar.h>

#### CHANGE HISTORY

> First released in Issue 4. Derived from the MSE working draft.

#### Issue 6

> The Open Group Corrigendum U040/2 is applied. In the RETURN VALUE section, s1 is changed to ws1.

> The wcscat() prototype is updated for alignment with the ISO/IEC 9899:1999 standard.

End of informative text.

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