C++ FAQ Celebrating Twenty-One Years of the C++ FAQ!!!
(Click here for a personal note from Marshall Cline.)
Section 13:
13.1 What's the deal with operator overloading?
13.2 What are the benefits of operator overloading?
13.3 What are some examples of operator overloading?
13.4 Is operator overloading supposed to make the class' code clearer?
13.5 What operators can/cannot be overloaded?
13.6 Overloading operator== to use string comparison?
13.7 Can I create operator** for to-the-power-of?
13.8 But which operators should I override?
13.9 Guidelines / "rules of thumb" for overloading operators?
13.10 Creating a subscript operator for a Matrix class?
13.11 Should my Matrix interface look like an array-of-array?
13.12 Part two of making my Matrix interface look like an array-of-array?
13.13 Designing classes from the outside-in vs. inside-out?
13.14 Overloading prefix/postfix forms of operators ++ and --?
13.15 Which is more efficient: i++ or ++i?
[13.6] Can I overload operator== so it lets me compare two char[] using a string comparison?

No: at least one operand of any overloaded operator must be of some user-defined type (most of the time that means a class).

But even if C++ allowed you to do this, which it doesn't, you wouldn't want to do it anyway since you really should be using a std::string-like class rather than an array of char in the first place since arrays are evil.