void*memcpy(void*dest,constvoid*src,size_tcount); (C99 前) void*memcpy(void*restrictdest,constvoid*restrictsrc,size_tcount); (C99 起) errno_t memcpy_s(void*restrictdest, rsize_t destsz, constvoid*restrictsrc, rsize_t count); (2)(C11 起) ...
(function) memcpymemcpy_s (C11) copies one buffer to another (function) wcscpywcscpy_s (C95)(C11) copies one wide string to another (function) strdup (dynamic memory TR) allocate a copy of a string (function) C++ documentationforstrcpy...
4.11.2.2 The memmove function See also memcpymemcpy_s (C11) copies one buffer to another (function) wmemmovewmemmove_s (C95)(C11) copies a certain amount of wide characters between two, possibly overlapping, arrays (function) C++ documentationformemmove...
若dest所指的字符数组大小<=strnlen_s(src, destsz)<destsz则行为未定义;换言之,destsz的错误值不暴露行将发生的缓冲区溢出。 同所有边界检查函数,strcpy_s,仅若实现定义__STDC_LIB_EXT1__且用户在包含<string.h>前定义__STDC_WANT_LIB_EXT1__为整数常量 1 才保证可用。
空终止字节字符串( NTBS )是尾随零值字节(空终止字符)的非零字节序列。字节字符串中的每个字节都是一些字符集的编码。例如,字符数组 {'\x63','\x61','\x74','\0'} 是一个以 ASCII 编码表示字符串 "cat" 的 NTBS 。 函数 注意:将来可能添加以to或is后随小写字母起始的新增函数到头文件ctype.h,故不...
memcpy(&n, &d, sizeof d); // OK printf("\n%a is %" PRIx64 " as an int64_t\n", d, n); #ifdef __STDC_LIB_EXT1__ set_constraint_handler_s(ignore_handler_s); char src[] = "aaaaaaaaaa"; char dst[] = "xyxyxyxyxy"; int r = memcpy_s(dst,sizeof dst,src,5); print...
C89/C90 标准(ISO/IEC 9899:1990): 4.11.2.4 The strncpy function 参阅 strcpystrcpy_s (C11) 复制一个字符串给另一个 (函数) memcpymemcpy_s (C11) 将一个缓冲区复制到另一个 (函数) strndup (动态内存 TR) 分配字符串副本,至多到指定的大小 (函数) strncpy的C++ 文档...
C89/C90 standard (ISO/IEC 9899:1990): 4.11.6.1 The memset function See also memcpymemcpy_s (C11) copies one buffer to another (function) wmemset (C95) copies the given wide character to every position in a wide character array (function) C++ documentationformemset...
memset, memset_explicit, memset_s 在标头<string.h>定义 void*memset(void*dest,intch,size_tcount); (1) void*memset_explicit(void*dest,intch,size_tcount); (2)(C23 起) errno_t memset_s(void*dest, rsize_t destsz,intch, rsize_t count);...
memsetmemset_explicitmemset_s (C23)(C11) fills a buffer with a character (function) memcpymemcpy_s (C11) copies one buffer to another (function) memmovememmove_s (C11) moves one buffer to another (function) memccpy (C23) copies one buffer to another, stopping after the specified delimiter ...