cstring头文件(cstring头文件)

谁借莪１个温暖的怀抱￠ 2023-09-26 13:03 2阅读 0赞

## 头文件有什么样的作用呢？ ##

(eg.C++编译模式\[1\])从以上结构图来看，头文件是用户应用程序和函数库之间的桥梁和纽带

## CStringW是什么啊？和CString有什么不同？ ##

CStringW是CString的UNICODE版本。只是字符编码不一样而已

## 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

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

\_strdup, \_wcsdup, \_mbsdup, \_strdup\_dbg, \_wcsdup\_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我只用了上面的两个就可以使用cstring了。

## CString需要什么头文件 ##

DOS页面没有CString

是string

头文件是

标准库是

\#include

int main(void)

std::string s("Hello");

std::cout<

\#include

int main(void)

string s("Hello");

cout<

也可以～dos页面没有cstring 是string 头文件是 标准库是 \#include \#include int main(void) \{ std::string s("hello"); std::cout<  \#include int main(void) \{ string s("hello"); cout<