cstring头文件

㈠ C++中 string 和cstring 头文件 有什么区别

你可以用标准的string，也可以用CString。如果没什么必要还是用string吧。

之所以有版CString，那是历权史原因。CString诞生的时候，C++标准还没出来。

--问题补充：为什么Turbo C++ 3.0却不可以用string呢？
--tc 3可以编c++的啊，怎么连string都用不了？

C++标准是98年出来的。tc3是98年以前出来的，所以你应该用新点的编译器。用VC2005，这个比较符合标准

㈡ c++里已经添加cstring头文件了,为什么strcat还是报错

没添加头文件会报函数找不到，这个错误又不是说你函数找不到，而是建议你用strcat_s，不要用这个函数

㈢ 头文件里#include <cstring>是什么意思

CString 是VC++里面的类，C++Builder里面没有这个类(直接用String定义）
比如：
在回VC++中定义字符答串 CString strname;
而在C++Builder里面：String strname。

㈣ CString在哪个头文件里

Project->Settings->C/C++->在Category中选择Code Generation->在Use run-time library中选择Multithreaded->OK
http://..com/question/118430642.html?si=2 好好看看这个，那也是我回答的，因为你没给我内分，所以我就懒的写容给你了。

㈤ CString 在C++中要导什么头文件

1、打开抄Dev-C++软件，单击文件袭菜单中的保存按钮。

㈥ 使用Cstring类需要用哪个头文件

VS中只要#include <atlstr.h>
完美解决

㈦ CString类型要包含什么头文件

#include <stdio.h>
#include <afx.h>//CString的头文件
void main()
{
CString str;//这是你要声明的
printf(str);屏幕上打印str
}

㈧ cstring头文件里的函数怎么用

跟C里的一样，看看MSDN就知道了，上面英语挺简单的；
String-Manipulation Routines
Routine Use .NET Framework equivalent
strcoll, wcscoll, _mbscoll, _strcoll_l, _wcscoll_l, _mbscoll_l, _stricoll, _wcsicoll, _mbsicoll, _stricoll_l, _wcsicoll_l, _mbsicoll_l, _strncoll, _wcsncoll, _mbsncoll, _strncoll_l, _wcsncoll_l, _mbsncoll_l, _strnicoll, _wcsnicoll, _mbsnicoll, _strnicoll_l, _wcsnicoll_l, _mbsnicoll_l
Compare two character strings using code page information (_mbsicoll and _mbsnicoll are case-insensitive)
System::String::Compare

_mbsdec, _mbsdec_l, _strdec, _wcsdec
Move string pointer back one character
Not applicable. To call the standard C function, use PInvoke. For more information, see Platform Invoke Examples.

_mbsinc, _mbsinc_l, _strinc, _wcsinc
Advance string pointer by one character
Not applicable.

_mbsnbcat, _mbsnbcat_l, _mbsnbcat_s, _mbsnbcat_s_l
Append, at most, first n bytes of one character string to another
Not applicable.

_mbsnbcmp, _mbsnbcmp_l
Compare first n bytes of two character strings
Not applicable.

_mbsnbcnt, _mbsnbcnt_l, _mbsnccnt, _mbsnccnt_l, _strncnt, _wcsncnt
Return number of character bytes within supplied character count
Not applicable.

_mbsnbcpy, _mbsnbcpy_l, _mbsnbcpy_s, _mbsnbcpy_s_l
Copy n bytes of string
Not applicable.

_mbsnbicmp, _mbsnbicmp_l
Compare n bytes of two character strings, ignoring case
Not applicable.

_mbsnbset, _mbsnbset_l
Set first n bytes of character string to specified character
Not applicable.

_mbsnbcnt, _mbsnbcnt_l, _mbsnccnt, _mbsnccnt_l, _strncnt, _wcsncnt
Return number of characters within supplied byte count
Not applicable.

_mbsnextc, _mbsnextc_l, _strnextc, _wcsnextc
Find next character in string
Not applicable.

_mbsninc, _mbsninc_l, _strninc, _wcsninc
Advance string pointer by n characters
Not applicable.

_mbsspnp, _mbsspnp_l, _strspnp, _wcsspnp
Return pointer to first character in given string that is not in another given string
Not applicable.

_scprintf, _scprintf_l, _scwprintf, _scwprintf_l
Return the number of characters in a formatted string
Not applicable.

_snscanf, _snscanf_l, _snwscanf, _snwscanf_l, _snscanf_s, _snscanf_s_l, _snwscanf_s, _snwscanf_s_l
Read formatted data of a specified length from the standard input stream.
Not applicable.

sscanf, _sscanf_l, swscanf, _swscanf_l, sscanf_s, _sscanf_s_l, swscanf_s, _swscanf_s_l
Read formatted data of a specified length from the standard input stream.
Not applicable.

sprintf, _sprintf_l, swprintf, _swprintf_l, __swprintf_l, sprintf_s, _sprintf_s_l, swprintf_s, _swprintf_s_l, _sprintf_p, _sprintf_p_l, _swprintf_p, _swprintf_p_l
Write formatted data to a string
System::String::Format

strcat, wcscat, _mbscat, strcat_s, wcscat_s, _mbscat_s
Append one string to another
System::String::Concat

strchr, wcschr, _mbschr, _mbschr_l
Find first occurrence of specified character in string
System::String::IndexOf

strcmp, wcscmp, _mbscmp
Compare two strings
System::String::CompareOrdinal

strcoll, wcscoll, _mbscoll, _strcoll_l, _wcscoll_l, _mbscoll_l, _stricoll, _wcsicoll, _mbsicoll, _stricoll_l, _wcsicoll_l, _mbsicoll_l, _strncoll, _wcsncoll, _mbsncoll, _strncoll_l, _wcsncoll_l, _mbsncoll_l, _strnicoll, _wcsnicoll, _mbsnicoll, _strnicoll_l, _wcsnicoll_l, _mbsnicoll_l
Compare two strings using current locale code page information (_stricoll, _wcsicoll, _strnicoll, and _wcsnicoll are case-insensitive)
System::String::Compare

strcpy, wcscpy, _mbscpy, strcpy_s, wcscpy_s, _mbscpy_s
Copy one string to another
System::String::Copy

strcspn, wcscspn, _mbscspn, _mbscspn_l
Find first occurrence of character from specified character set in string
System::String::Substring

_strp, _wcsp, _mbsp, _strp_dbg, _wcsp_dbg
Duplicate string
System::String::Clone

strerror, _strerror, _wcserror, __wcserror, strerror_s, _strerror_s, _wcserror_s, __wcserror_s
Map error number to message string
System::Exception::Message

strftime, wcsftime, _strftime_l, _wcsftime_l
Format date-and-time string
System::Convert::ToString

_stricmp, _wcsicmp, _mbsicmp, _stricmp_l, _wcsicmp_l, _mbsicmp_l
Compare two strings without regard to case
System::String::Compare

strlen, strlen_l, wcslen, wcslen_l, _mbslen, _mbslen_l, _mbstrlen, _mbstrlen_l, strnlen, strnlen_l, wcsnlen, wcsnlen_l, _mbsnlen, _mbsnlen_l, _mbstrnlen, _mbstrnlen_l
Find length of string
System::String::Length

_strlwr, _wcslwr, _mbslwr, _strlwr_l, _wcslwr_l, _mbslwr_l, _strlwr_s, _strlwr_s_l, _mbslwr_s, _mbslwr_s_l, _wcslwr_s, _wcslwr_s_l
Convert string to lowercase
System::String::ToLower

strncat, _strncat_l, wcsncat, wcsncat_l, _mbsncat _mbsncat_l, strncat_s, _strncat_s_l, wcsncat_s, _wcsncat_s_l, _mbsncat_s, _mbsncat_s_l
Append characters of string
System::String::Concat

strncmp, wcsncmp, _mbsncmp, _mbsncmp_l
Compare characters of two strings
System::String::Compare

strncpy, _strncpy_l, wcsncpy, _wcsncpy_l, _mbsncpy, _mbsncpy_l, strncpy_s, _strncpy_s_l, wcsncpy_s, _wcsncpy_s_l, _mbsncpy_s, _mbsncpy_s_l
Copy characters of one string to another
System::String::Copy

_strnicmp, _wcsnicmp, _mbsnicmp, _strnicmp_l, _wcsnicmp_l, _mbsnicmp_l
Compare characters of two strings without regard to case
System::String::Compare

_strnset, _strnset_l, _wcsnset, _wcsnset_l, _mbsnset, _mbsnset_l
Set first n characters of string to specified character
System::String::Replace

strpbrk, wcspbrk, _mbspbrk, _mbspbrk_l
Find first occurrence of character from one string in another string
System::String::IndexOfAny

strrchr, wcsrchr, _mbsrchr, _mbsrchr_l
Find last occurrence of given character in string
System::String::LastIndexOf

_strrev, _wcsrev, _mbsrev, _mbsrev_l
Reverse string
Not applicable.

_strset, _strset_l, _wcsset, _wcsset_l, _mbsset, _mbsset_l
Set all characters of string to specified character
Not applicable.

strspn, wcsspn, _mbsspn, _mbsspn_l
Find first substring from one string in another string
System::String::Substring

strstr, wcsstr, _mbsstr, _mbsstr_l
Find first occurrence of specified string in another string
System::String::IndexOf

strtok, _strtok_l, wcstok, _wcstok_l, _mbstok, _mbstok_l, strtok_s, _strtok_s_l, wcstok_s, _wcstok_s_l, _mbstok_s, _mbstok_s_l
Find next token in string
Not applicable.

_strupr, _strupr_l, _mbsupr, _mbsupr_l, _wcsupr_l, _wcsupr, _strupr_s, _strupr_s_l, _mbsupr_s, _mbsupr_s_l, _wcsupr_s, _wcsupr_s_l
Convert string to uppercase
System::String::ToUpper

strxfrm, wcsxfrm, _strxfrm_l, _wcsxfrm_l
Transform string into collated form based on locale-specific information
Not applicable.

vsprintf, _vsprintf_l, vswprintf, _vswprintf_l, __vswprintf_l, vsprintf_s, _vsprintf_s_l, vswprintf_s, _vswprintf_s_l, _vsprintf_p, _vsprintf_p_l, _vswprintf_p, _vswprintf_p_l
Write formatted output using a pointer to a list of arguments
System::String::Format

vsnprintf, _vsnprintf, _vsnprintf_l, _vsnwprintf, _vsnwprintf_l, vsnprintf_s, _vsnprintf_s, _vsnprintf_s_l, _vsnwprintf_s, _vsnwprintf_s_l
Write formatted output using a pointer to a list of arguments
System::String::Format

㈨ C++中 string 和cstring 头文件 有什么区别

可以用标准的string，也可以用CString。如果没什么必要还是用string吧。 之所以有CString，那是历史原因。CString诞生内的时候，C++标准还没出来。容 --问题补充：为什么Turbo C++ 3.0却不可以用string呢？ --tc 3可以编c++的啊，怎么连string都用不了？ C++标准是98年出来的。tc3是98年以前出来的，所以应该用新点的编译器。用VC2005，这个比较符合标准。

㈩ C++里面的cstring头文件

当调用来库函数，客户程自序提供的是string类型参数，而库函数内部实现用的是c-串，因此需要将string对象，转化为char*对象，而c_str()提供了这样一种方法，它返回一个客户程序可读不可改的指向字符数组的指针。
另外，输出string类对象的长度可以用cout<<s1.size()<<endl;