Adding Header Files

Get practice working with declarations and definitions by creating a header file for one of our classes.

This lesson is part of the course:

Intro to C++ Programming

Become a software engineer with C++. Starting from the basics, we guide you step by step along the way

Ryan McCombe

Posted 2 years ago

In this challenge, we will practice creating a header file for one of our classes.

Given we have the following class in a .cpp file, move the declaration into a .h file and use the cpp file for implementation. Remember to use a header guard!

1// Character.cpp
2class Character {
3public:
4  virtual void Attack(Character* Target){
5    Target->TakeDamage(BaseDamage);
6  };
7  virtual void TakeDamage(int Amount){
8    Health -= Amount;
9  };
10  bool isDead() { return Health <= 0; }
11protected:
12  int BaseDamage { 75 };
13  int Health { 500 };
14};
15

Solution

1// Character.h
2#pragma once
3
4class Character {
5public:
6  virtual void Attack(Character* Target);
7  virtual void TakeDamage(int Amount);
8  bool isDead();
9protected:
10  int BaseDamage { 75 };
11  int Health { 500 };
12};
13

1// Character.cpp
2#include "Character.h"
3
4void Character::Attack(Character* Target) {
5  Target->TakeDamage(BaseDamage);
6};
7
8void Character::TakeDamage(int Amount) {
9  Health -= Amount;
10};
11
12bool Character::isDead() { return Health <= 0; }
13