strlen Get string length (function)参考资料：<a href="http://www.cplusplus.com/reference/clibrary/cstring/" target="_blank" rel="nofollow noopener">http://www.cplusplus.com/reference/clibrary/cstring/</a> 常用函数：strlen 求字符串长度strcmp 比较2个字符串是否一样strcat 字符串连接操作strcpy 字符串拷贝操作strstr 查询子串更具体的你可以查阅msdnMSDN
string.h头文件中的函数：1、#include <algorithm> //STL 通用算法 2、#include <bitset> //STL 位集容器 3、#include <complex> //复数类 4、#include <deque> //STL双端队列容器 5、#include <exception> //异常处理类 6、#include <list> //STL 线性列表容器 7、#include //STL 映...
_CRTIMP char * __cdecl strcpy(char *, const char *); _CRTIMP char * __cdecl strcat(char *, const char *); _CRTIMP int __cdecl strcmp(const char *, const char *); _CRTIMP size_t __cdecl strlen(const char *); #else void * __cdecl memcpy(void *, const void *, size_t); ...
first copy the first part as a constant string into destination str.// functions that take char* as input you can also give a char[] as input without the [];// in fact char str[100]; is the same as char* str; followed by str = new char[100];strcpy(str,"Co-ordinates are\nX...
20.4.6 C library//#pragmaGCC system_header#include<bits/c++config.h>#include<string.h>#ifndef _GLIBCXX_CSTRING#define_GLIBCXX_CSTRING 1//Get rid of those macros defined in <string.h> in lieu of real functions.#undefmemchr#undefmemcmp#undefmemcpy#undefmemmove#undefmemset#undefstrcat#undefstrchr...
*/ # if @REPLACE_SPRINTF@ # if !(defined __cplusplus && defined GNULIB_NAMESPACE) # define sprintf rpl_sprintf diff --git a/modules/sprintf-posix b/modules/sprintf-posix index 589ad104ce..a1eb6127ad 100644 --- a/modules/sprintf-posix +++ b/modules/sprintf-posix @@ -18,7 +18,7 ...
一、string头文件 主要包含一些字符串转换的函数 // sto* NARROW CONVERSIONS // sto* WIDE CONVERSIONS stoi //convert string to int stol //convert string to long stoul //convert string to unsigned long stoll //convert string to long long ...
#include <cstdlib>#include <iostream>#include <string.h>usingnamespacestd;voidstrcpy(void);voidstrncpy(void);voidstrcmp(void);voidstrncmp(void);voidstrcat(void);voidstrncat(void);voidstrlen(void);intmain() {intw=1, choice;do{ cout<<"You have entered the string demostration program."<<end...
1These functions are available for C++ programs. They are available for C only when the program defines the __cplusplus__strings__ macro. The <string.h> include file also defines the macroNULL, and the typesize_t. For more information aboutNULLand the typesize_t, see<stddef.h>....
/* *Definesize_t,wchar_tandNULL */ #define__need_size_t #define__need_wchar_t #define__need_NULL #ifndefRC_INVOKED #include<stddef.h> #endif/*NotRC_INVOKED*/ #ifndefRC_INVOKED #ifdef__cplusplus extern"C"{ #endif /* *PrototypesoftheANSIStandardClibrarystringfunctions. */ _CRTIMP...