Strings and Arrays in Headers

Question

Can a string go in a header file? What about string arrays?

Answer 1

Sure, why not. You can write your own headers which contain classes, functions, variables, which you can then include in your project / another cpp file.

// header.h

#include <string>
std::string str = "In header file.";

// test.cpp

#include <iostream>
#include "header.h"

int main()
{
std::cout << str;
}

Answer 2

Just be careful about allocating storage to static data members of your class. You must do it inside the implementation file (.cpp).
Example:

// foo.h

#include <string>

class foo {
public:

static void f();

private:

static std::string _record; // incomplete...
};

// foo.cpp

std::string foo::_record; // complete allocation
void foo::f() {

// some code
}

There are also lots of gotchas regarding to your question which need you to learn more about OOP.