.h files.

Question

I guess this isn't a solo learn question but it's c++, any recommendations on tutorial s for making header files

Answer 1

Here's an example, in your header you declare a class like this: (edit) forgot the #define HEADER_H under #pragma once

#pragma once // add this at the top of your header so it can't be included more than once

class MyClass
{
private:
int somedata;
public:
MyClass();
void SomeMethod();
};

In your .cpp file you define your constructor and method:
MyClass::MyClass()
{

}

void MyClass::SomeMethod()
{

}

Answer 2

Header files contain your declarations, and source files contain your definitions. That's basically it. Notice that the header file contains header guards; this is so that you can include the header multiple times across different files without worrying about your declarations being include more than once. If you're using a modern compiler, you can also just use "#pragma once" at the top of the file. While non-standard, most compilers will support it.

Here is an example of how you could use header/source files:

In "Header.h":

#ifndef HEADER_H
#define HEADER_H

class MyClass {

public:
int sum(int, int);

}

void freeFunction();

#endif

In "Source.cc":

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

int MyClass::sum(int a, int b) {

return a + b;

}

void freeFunction() {

std::cout << "Hello, World!";

}

Answer 3

or if any one can give me an example of using one with the cpp I could figure it out from there

Answer 4

Use #ifndef + #define + #endif as the guy above suggested. #pragma once can lead to some problem related to naming.