[klingonopera]

> "Using the "+" operator with two string constants gives a weird compiler error about adding pointers?"

He'd have that in C too, and that's the expected behaviour. What he would want is:

  #define STRING1 "hello"
  #define STRING2 "world"
  const char* gString = STRING1 " " STRING2 "!\n";
  #include <stdio.h>
  int main() {printf(gString); return 0x0;}

[AstralStorm]

If you make them string constants rather than character arrays with the new literal ""s added in C++14, problem is gone. Author is using outdated C++.

This is all due to C compatibility.

[klingonopera]

Ah, yeah... no clue about C++'s strings, I just read his question and that sounded familiar to the problem, whose solution I posted above.

There's some overlap between C and C++, but maybe this wasn't such a case? Sorry, if it was uncalled for.