ARM Compiler ARM C and C++ Libraries and Floating-Point Support User Guide : 4.57 wcstombs()

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4.57 wcstombs()

Defined in wchar.h, the wcstombs() function works as described in the ISO C standard, with extended functionality as specified by POSIX.

That is, if s is a NULL pointer, wcstombs() returns the length required to convert the entire array regardless of the value of n, but no values are stored.

Syntax

size_t wcstombs(char *s, const wchar_t *pwcs, size_t n);

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