C++ strings vs vector<char> [duplicate]

问题

This question already has answers here:

What are differences between std::string and std::vector<char>? (5 answers)

C++: char test[100] vs array<char, 100> vs string (4 answers)

Closed 5 years ago.

It's known to everyone of us that we should prefer string class in C++ for all string applications due to the many special functions they perform & their ability to grow & reduce dynamically. What string is for characters, vector is for other data types & classes because it shows great performance.

However is there any situation where we would need to prefer vector<char> (which I see seldom) over string ?

回答1:

I'd use vector<char> only if I explicitly intent to store an array of char values, which is not a string. E.g. if for some reason I'd collect all the characters used somewhere in a specific text, the result might be a vector<char>.

To be clear: it is all about expressing the intent.

回答2:

To put it briefly: if you're storing text, then string, otherwise vector<char>.

来源：https://stackoverflow.com/questions/33132363/c-strings-vs-vectorchar