Question

Which is better for string literals,
standard string or character array?

I mean to say for constant strings, say

const char name[] = "so"; //or to use 
const string name = "so";

Answer 1

For string literals, and only for string constants that come from literals, I would use const char[]. The main advantage of std::string is that it has memory management for free, but that is not an issue with string literals.

It is the actual type of the literal anyway, and it can be directly used in any API that requires either the old C style null terminated strings or the C++ strings (implicit conversion kicks in). You also get a compile time size implementation by using the array instead of the pointer.

Now, when defining function interfaces, and even if constants are intented to be passed in, I would prefer std::string rather than const char*, as in the latter case size is lost, and will possibly need to be recalculated.

Out of my own experience. I grew old of writting .c_str() on each and every call to the logging library (that used variable arguments) for literal strings with info/error messages.