vector<char*>和vector<string>的不同_vector<string>和vector<vector<char>>区别-优快云博客

本文详细介绍了C++中如何在std::string与vector<char>之间进行互转，并讨论了内存管理的重要性。通过使用string类和vector容器，展示了如何有效地处理字符串数据，以及在内存分配和释放时需要注意的关键点。

摘要生成于 C知道，由 DeepSeek-R1 满血版支持，前往体验 >

This really has nothing to do with vectors specifically.

A char* is a pointer, which may or may not point to valid string data.

A std::string is a string class, encapsulating all the required data that makes up a string, along with allocation and deallocation functionality.

If you store std::string's in a vector, or anywhere else, then everything will just work.
If you store char pointers, you have to do all the hard work of allocating and freeing memory, and ensuring the pointers only ever point to meaningful string data, and determine the length of the strings and so on.

And since char*'s are expected by a lot of of C API's as well as part of the C++ standard library, the string class has the c_str() function which returns a char*.

另附： vectot<char> 转为 string

int   main(int,char*[]) 
{ 
        string   str= "asads "; 
        vector <char> x( str.begin(),str.end() ); 
        string   str2( x.begin(),x.end() ); 
        cout < <str2 < <endl; 
}

http://stackoverflow.com/questions/550035/vectorstring-or-vectorchar

http://topic.youkuaiyun.com/u/20070926/17/148241ad-2cc8-475f-ad58-0cc365f855ea.html