Odd duplicate symbols error

Question

For a school project, the class was asked to write a String class to mimic the STL string class.

I have all the code written, but the linke

Answer 1

You provided the definitions of the operators in the header file which gets included by both String.cpp and test2.cpp.
You should move the definitions into one source file and only provide declarations in the header file.

// in String.h:
bool operator==(const String& left, const char* right);

// in String.cpp:
bool operator ==(const String& left, const char* right) {
    return left.compare_to(right)==0; 
}