C++ headers and source description

_example.cpp

#include <iostream>

class Foo
{
public:
    Foo() {}

    void method1()
    {
        std::cout << "Foo::method1()" << std::endl;
    }

    void method2()
    {
        std::cout << "Foo::method2()" << std::endl;
    }
};


int main(int argc, char *argv[])
{
    Foo f;
    f.method1();
    f.method2();

    return 0;
}

example.cpp

#include <iostream>

class Foo
{
public:
    Foo();
    void method1();
    void method2();
};

Foo::Foo()
{}

void Foo::method1()
{
    std::cout << "Foo::method1()" << std::endl;
}

void Foo::method2()
{
  std::cout << "Foo::method2()" << std::endl;
}


int main(int argc, char *argv[])
{
    Foo f;
    f.method1();
    f.method2();

    return 0;
}

foo.cpp

#include <iostream>

#include "foo.h"


Foo::Foo()
{}

void Foo::method1()
{
    std::cout << "Foo::method1()" << std::endl;
}

void Foo::method2()
{
    std::cout << "Foo::method2()" << std::endl;
}

foo.h

#pragma once

class Foo
{
public:
    Foo();

    void method1();
    void method2();
};

main.cpp

#include "foo.h"

int main(int argc, char *argv[])
{
    Foo f;
    f.method1();
    f.method2();

    return 0;
}

/**
 * Program to be compiled using
 * $ g++ main.cpp foo.cpp
 */