使用2个输入变量拆分字符串，“startstr”和“endstr” [英] Splitting a String with 2 input variables, "beginstr" and "endstr"

问题描述

我想制作一个分割字符串函数，但它变得越来越复杂。


我想做的是用String，BeginStr和一个
EndStr变量，我希望它在char数组中返回它。


例如：


char teststr [255];

strcpy（teststr，" test：blah;"）;


char returned_string [255];

strcpy（returned_string，splitstring（teststr，" test："，";"））;


和它的对象是return_string = = blah

有人可以帮助我吗？


谢谢，非常感谢帮助=）

解决方案

< blockquote> 2008-09-02 19:31， ke *********** @ gmail.com 写道：

我想制作一个分裂字符串函数，但它变得越来越复杂。


我想要做的是使用String，BeginStr a创建一个函数和一个

EndStr变量，我希望它以char数组返回它。


例如：


char teststr [255];

strcpy（teststr，" test：blah;"）;


char returned_string [255];

strcpy（returned_string，splitstring（teststr，" test："，";"））;


和它的返回值= blah

有人能帮帮我吗？

当然，首先转储char数组并使用std :: string。然后阅读

std :: string :: find（）和std :: string :: substr（）。首先找到BeginStr

然后获取其后的所有内容的子字符串，然后在其中找到EndStr并且

返回它前面的所有内容。


-

Erik Wikstr ?? m

9月2日，2：07 * pm，Eri​​k Wikstr？m< Erik-wikst ... @ telia.comwrote：

2008-09-02 19:31，kevineller ... @ gmail.com写道：

我想制作一个分裂字符串函数，但它变得越来越复杂。

我想做的是使用String，BeginStr和

EndStr变量创建一个函数，我想要它在char数组中返回它。

例如：

char teststr [255];

strcpy（teststr，" test：blah;"）;

char returned_string [255];

strcpy（returned_string，splitstring（teststr，" test："，"） ;;"））;

和它的返回值= blah

有人可以帮助我？

当然，首先转储char数组并使用std :: string。然后阅读

std :: string :: find（）和std :: string :: substr（）。首先找到BeginStr

然后获取其后的所有内容的子字符串，然后在其中找到EndStr并且

返回它前面的所有内容。


-

Erik Wikstr？m

好​​的我做到了，但我的字符串是：


" test1 = test1; test2 = test2;"


它找到test2，但它只找到FIRST;，所以它说'

EndStr在BeginStr之前，它没有正确地执行这个

，

任何补救措施？


我'对不起，我没有提到我需要从文本文件中解析整行

这些。

ke *********** @ gmail.com 写道：

我想制作一个分裂字符串函数，但它变得越来越复杂。


我想做的是用一个函数做一个函数String，BeginStr和一个

EndStr变量，我希望它以char数组的形式返回它。


例如：


char teststr [255];

strcpy（teststr，" test：blah;"）;


char returned_string [255] ;

strcpy（returned_string，splitstring（teststr，" test：" ，;，））;


和它的对象是否= blah

如果您的编译器支持它，那么你可能对TR1常规

表达式感兴趣。


LR

I want to make a split string function, but it''s getting complicated.

What I want to do is make a function with a String, BeginStr and an
EndStr variable, and I want it to return it in a char array.

For example:

char teststr[255];
strcpy(teststr, "test:blah;");

char returned_string[255];
strcpy(returned_string, splitstring(teststr, "test:", ";"));

and it returned_string would = blah

can someone help me?

Thank you, help is much appreciated =)

解决方案

On 2008-09-02 19:31, ke***********@gmail.com wrote:

I want to make a split string function, but it''s getting complicated.

What I want to do is make a function with a String, BeginStr and an
EndStr variable, and I want it to return it in a char array.

For example:

char teststr[255];
strcpy(teststr, "test:blah;");

char returned_string[255];
strcpy(returned_string, splitstring(teststr, "test:", ";"));

and it returned_string would = blah

can someone help me?

Sure, first dump the char arrays and use std::string. Then read up on
std::string::find() and std::string::substr(). Start by finding BeginStr
and get a substring of everything after it, then find EndStr in that and
return everything in front of it.

--
Erik Wikstr??m

On Sep 2, 2:07*pm, Erik Wikstr?m <[e-mail]:

On 2008-09-02 19:31, [e-mail] wrote:

I want to make a split string function, but it''s getting complicated.

What I want to do is make a function with a String, BeginStr and an
EndStr variable, and I want it to return it in a char array.

For example:

char teststr[255];
strcpy(teststr, "test:blah;");

char returned_string[255];
strcpy(returned_string, splitstring(teststr, "test:", ";"));

and it returned_string would = blah

can someone help me?

Sure, first dump the char arrays and use std::string. Then read up on
std::string::find() and std::string::substr(). Start by finding BeginStr
and get a substring of everything after it, then find EndStr in that and
return everything in front of it.

--
Erik Wikstr?m

Ok I did that, but my string here is:

"test1=test1; test2=test2;"

and it finds test2, but it only finds the FIRST ";", so it''s saying
that the EndStr is before the BeginStr, and it doesn''t do this
correctly,
any remedy?

I''m sorry I didn''t include that I needed to parse a whole line of
these from a text file.

ke***********@gmail.com wrote:

I want to make a split string function, but it''s getting complicated.

What I want to do is make a function with a String, BeginStr and an
EndStr variable, and I want it to return it in a char array.

For example:

char teststr[255];
strcpy(teststr, "test:blah;");

char returned_string[255];
strcpy(returned_string, splitstring(teststr, "test:", ";"));

and it returned_string would = blah

If your compiler supports it, you might be interested in TR1 regular
expressions.

LR

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