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。
Null-terminated byte strings Defined in header<string.h> (1) char*strcpy(char*dest,constchar*src); (until C99) char*strcpy(char*restrictdest,constchar*restrictsrc); (since C99) errno_t strcpy_s(char*restrictdest, rsize_t destsz,constchar*restrictsrc); ...
我引用了这个文档(https://en.cppreference.com/w/c/string/byte/strcpy)，它指出您应该指定目标大小...
// crt_wcscpy_s.cpp// Compile by using: cl /EHsc /W4 crt_wcscpy_s.cpp// This program uses wcscpy_s and wcscat_s// to build a phrase.#include<cstring> // for wcscpy_s, wcscat_s#include<cstdlib> // for _countof#include<iostream> // for cout, includes <cstdlib>, <cstring>#incl...
The strcpy_s function copies the contents in the address of strSource—this includes the terminating null character—to the location that's specified by strDestination. The destination string must be large enough to hold the source string and its terminating null character. The behavior of strcpy...
我想知道我是否可以安全替换此处定义的strcpy_s https://msdn.microsoft.com/en-us/library/td1esda9.aspx - (一个有两个参数),此处定义了strcpy http://en.cppreference.com/w/c/string/byte/strcpy - (第一个)。如果没有,那么最接近的版本是 strcpy 我可以用来替换strcpy_s吗? 看答案 添加了C11标准 ...
2010-07-20 11:08 −Code highlighting produced by Actipro CodeHighlighter (freeware)http://www.CodeHighlighter.com/-->// CppReference.cpp : 定义控制台应用程序的入口点。//... 虚怀若谷 0 45486 strlen() 和 strcpy()函数 2014-04-01 21:13 −strlen() 和 strcpy()函数的区别,这两个一个是返...
// crt_wcscpy_s.cpp // Compile by using: cl /EHsc /W4 crt_wcscpy_s.cpp // This program uses wcscpy_s and wcscat_s // to build a phrase. #include <cstring> // for wcscpy_s, wcscat_s #include <cstdlib> // for _countof ...
// crt_wcscpy_s.cpp // Compile by using: cl /EHsc /W4 crt_wcscpy_s.cpp // This program uses wcscpy_s and wcscat_s // to build a phrase. #include <cstring> // for wcscpy_s, wcscat_s #include <cstdlib> // for _countof #include <iostream> // for cout, includes <cstdlib>, ...
// crt_strcpy_s.cpp // This program uses strcpy_s and strcat_s // to build a phrase. // #include <string.h> #include <stdlib.h> #include <stdio.h> #include <errno.h> int main( void ) { char string[80]; // using template versions of strcpy_s and strcat_s: strcpy_s( str...