C字符串缺失C ++ [英] C strings deletion in C++

问题描述

什么是好，什么是错的？在这种情况下，我必须打电话，以便删除对prevent内存泄漏？
此外，在C和C ++的行为完全一样？是否有什么不同吗？

 为const char * A =blahblah;
...
删除;字符B * =新的字符（'A'）;
...
删除B：焦C [100] =blahblah;
...
删除C;字符D * =新的char [40];
...
删除D组;焦炭E * =新的char [40];
...
删除[我们];
 

解决方案

  

在这种情况下，我必须打电话，以便删除对prevent内存泄漏

只有删除您从新和删除[] 您从新[] 。每隔删除是错误的。

What's good and what's wrong? In which case do I have to call delete in order to prevent memory leak? Also, is the behaviour exactly the same in C and C++? Are there any differences?

const char* a = "blahblah";
...
delete a;

char b* = new char('a');
...
delete b;

char c[100] = "blahblah";
...
delete c;

char d* = new char[40];
...
delete d;

char e* = new char[40];
...
delete[] e;

解决方案

In which case do I have to call delete in order to prevent memory leak

Only delete what you got from new and delete [] what you got from new []. Every other delete is wrong.

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