在c ++中strdup [英] strdup in c++

问题描述

您好，


我有一个用c ++编写的程序，我希望使用类似的函数来支持
strdup（）。

我遇到问题的原因是char数组需要释放以避免内存泄漏，但是使用delete []会出现问题;


例如


char * NewCharArray;


NewCharArray = strdup（" Some text"）;


delete [] NewCharArray;

Nybody有什么想法吗？

谢谢

Allan

Hi there,

I have a program written in c++ and I wish to use a similar function to
strdup().
The reason I have problems is that the char array requires freeing to avoid
a memory leak, but I get problems using delete[];

e.g.

char *NewCharArray;

NewCharArray = strdup("Some text");

delete []NewCharArray;
Nybody have any ideas?
Thanks
Allan

推荐答案

" Allan Bruce" <人***** @ TAKEAWAYf2s.com>在消息新闻中写道：bk ********** @ news.freedom2surf.net ...

"Allan Bruce" <al*****@TAKEAWAYf2s.com> wrote in message news:bk**********@news.freedom2surf.net...

你好，

我有一个用c ++和我希望使用类似的功能
strdup（）。
我遇到问题的原因是char数组需要释放以避免内存泄漏，但是我在使用delete时遇到问题[];

例如

char * NewCharArray;

NewCharArray = strdup（" Some text"）;

> delete [] NewCharArray;

Nybody有什么想法？

Hi there,

I have a program written in c++ and I wish to use a similar function to
strdup().
The reason I have problems is that the char array requires freeing to avoid
a memory leak, but I get problems using delete[];

e.g.

char *NewCharArray;

NewCharArray = strdup("Some text");

delete []NewCharArray;
Nybody have any ideas?

std :: string NewString;


NewString =" SomeText";


//删除不需要。

std::string NewString;

NewString = "SomeText";

// delete not required.

Allan Bruce写道：

Allan Bruce wrote:

你好，

我有一个用c ++编写的程序，我希望使用类似的功能
strdup（）。
我遇到问题的原因是char数组需要释放以避免内存泄漏，但我使用delete [];
例如

char * NewCharArray;

NewCharArray = strdup（" Some text"）;

delete [] NewCharArray;

Nybody有什么想法？

Hi there,

I have a program written in c++ and I wish to use a similar function
to strdup().
The reason I have problems is that the char array requires freeing to
avoid a memory leak, but I get problems using delete[];

e.g.

char *NewCharArray;

NewCharArray = strdup("Some text");

delete []NewCharArray;
Nybody have any ideas?

Nybody一定是斯堪的纳维亚人:-)


使用std :: string而不是摆弄那些数组。


-

Attila aka WW

Nybody must be some Scandinavian guy :-)

Use std::string instead of fiddling with those arrays.

--
Attila aka WW

" Allan Bruce" <人***** @ TAKEAWAYf2s.com>写了

"Allan Bruce" <al*****@TAKEAWAYf2s.com> wrote

我有一个用c ++编写的程序，我希望使用类似的功能
strdup（）。
我遇到问题的原因是char数组需要释放以避免内存泄漏，但是我在使用delete []时遇到问题;

I have a program written in c++ and I wish to use a similar function to
strdup().
The reason I have problems is that the char array requires freeing to avoid
a memory leak, but I get problems using delete[];

你必须免费使用：


#include< cstdlib>

#include< cstring>

// ...

char * NewCharArray = strdup（你好）;

// std :: strdup在我的机器上无法编译

//（宏？）。干得好我从不使用它。

std :: free（NewCharArray）;


但不要这样做。使用标准字符串类。


问候，

巴斯特

You have to use free:

#include <cstdlib>
#include <cstring>
// ...
char * NewCharArray = strdup ("Hi there");
// std::strdup doesn''t compile on my machine
// (macro?). Good job I never use it.
std::free (NewCharArray);

But don''t do that. Use the standard string class.

Regards,
Buster

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