Each of these functions takes a pointer to an argument list, then formats and writes up to count characters of the given data to the memory pointed to by buffer and appends a terminating null.If count is _TRUNCATE, then these functions write as much of the string as will fit in ...
如果输出有错误,vsnprintf_s、_vsnprintf_s 和 _vsnwprintf_s 返回编写的字符数,不包括终止空字符或负值。 vsnprintf_s 等同于 _vsnprintf_s。 包含vsnprintf_s 是符合 ANSI 标准。 保留 _vnsprintf 的目的是为了向后兼容。 如果用来存储数据和终止空的存储区超过 sizeOfBuffer,则引发无效参数调用处理程序,如...
使用指向参数列表的指针写入格式化的输出。 这些函数的版本是vsnprintf、_vsnprintf、_vsnprintf_l、_vsnwprintf、_vsnwprintf_l,具有安全性增强功能,如CRT 中的安全功能中所述。 语法 C复制 intvsnprintf_s(char*buffer,size_tsizeOfBuffer,size_tcount,constchar*format, va_list argptr )...
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int_vsnwprintf_s(wchar_t*buffer,size_tsizeOfBuffer,size_tcount,constwchar_t*format, va_list argptr );int_vsnwprintf_s_l(wchar_t*buffer,size_tsizeOfBuffer,size_tcount,constwchar_t*format,_locale_tlocale, va_list argptr );template<size_tsize>int_vsnprintf_s(ch...
int_vsnwprintf_s(wchar_t*buffer,size_tsizeOfBuffer,size_tcount,constwchar_t*format, va_list argptr );int_vsnwprintf_s_l(wchar_t*buffer,size_tsizeOfBuffer,size_tcount,constwchar_t*format,_locale_tlocale, va_list argptr );template<size_tsize>int_vsnprintf_s(char(&buffer)[size],size_...
int_vsnwprintf_s(wchar_t*buffer,size_tsizeOfBuffer,size_tcount,constwchar_t*format, va_list argptr );int_vsnwprintf_s_l(wchar_t*buffer,size_tsizeOfBuffer,size_tcount,constwchar_t*format,_locale_tlocale, va_list argptr );template<size_tsize>int_vsnprintf_s(char(&buffer)[size],size_...
Return Value vsnprintf_s,_vsnprintf_s and _vsnwprintf_s return the number of characters written, not including the terminating null, or a negative value if an output error occurs. vsnprintf_s is identical to _vsnprintf_s. vsnprintf_s is included for compliance to the ANSI standard. _vnsp...
( char *buffer, size_t sizeOfBuffer, size_t count, const char *format, _locale_t locale, va_list argptr ); int _vsnwprintf_s( wchar_t *buffer, size_t sizeOfBuffer, size_t count, const wchar_t *format, va_list argptr ); int _vsnwprintf_s_l( wchar_t *buffer, size_t size...
(仅对于 vswprintf_s )要存储于 buffer (含尾随宽空字符)的宽字符串长度会超出 bufsz 同所有边界检查函数, vwprintf_s, vfwprintf_s, vswprintf_s, vsnwprintf_s 仅若实现定义了 __STDC_LIB_EXT1__ ,且用户在包含 <wchar.h> 前定义 __STDC_WANT_LIB_EXT1__ 为整数常量 1 才保证可用。