C++ Decorator - Not working properly - c++

First Issue Resolved
As voiced in the answers below , i incorrectly wrote the
#ifndef ICETOWER_H
#define ICETOWER_H
I'm still having some problem with my c++ code.
I implemented a decorator pattern to upgrade a basic tower to an ice tower with 2* the cost. but when i run it , its displaying the same specs for both towers even after it has been decorated . Anyone have any idea what i did wrong ?
Here are the files :
tower.h
#ifndef __TOWER_H__
#define __TOWER_H__
#include <iostream>
#include <string>
using namespace std;
class Tower {
private:
string type;
string effect;
int cost;
int sellTower;
int damage;
int range;
int rate;
public:
string getType() { return type; }
string getEffect() { return effect; }
int getCost() { return cost; }
int getSale() { return sellTower; }
int getDamage() { return damage; }
int getRange() { return range; }
int getROF() { return rate; }
Tower();
virtual ~Tower(){}
};
#endif __TOWER_H__
tower.cpp
#include "Tower.h"
Tower::Tower()
{
// Tower Type
this->type = "Basic";
// Tower Special Effect
this->effect = "None";
// Tower Cost
this->cost = 500;
// Tower Sell Cost
this->sellTower = 300;
// Tower Damage inflicted
this->damage = 50;
// Tower Range (paths)
this->range = 2;
// Tower rate of fire
this->rate = 0.5;
};
TowerDecorator.h
#ifndef __TOWERDECORATOR_H__
#define __TOWERDECORATOR_H__
#include <iostream>
#include <string>
#include "Tower.h"
using namespace std;
class TowerDecorator : public Tower {
private:
Tower *decoratedTower;
public:
TowerDecorator(Tower *decoratedTower)
{
this->decoratedTower = decoratedTower;
}
string type() { return decoratedTower->getType(); }
string effect() { return decoratedTower->getEffect(); }
int getCost() { return decoratedTower->getCost(); }
int getSale() { return decoratedTower->getSale(); }
int getDamage() { return decoratedTower->getDamage(); }
int getRange() { return decoratedTower->getRange(); }
int getROF() { return decoratedTower->getROF(); }
};
#endif __TOWERDECORATOR_H__
iceTower.h
#ifndef ICETOWER_H
#define ICETOWER_H
#include "TowerDecorator.h"
class IceTower : public TowerDecorator {
public:
IceTower(Tower *decoratedTower) : TowerDecorator (decoratedTower){}
int getCost(){return TowerDecorator::getCost() * 2;}
};
#endif __ICETOWER_H__
Driver.cpp
#include "Tower.h"
#include "TowerDecorator.h"
#include "IceTower.h"
void printTowerDetails(Tower* tower)
{
cout << endl << "This is a " << tower->getType() << " Tower" << endl;
cout << "Build Tower : " << tower->getCost() << " Coins" << endl;
cout << "Sell Tower : " << tower->getSale() << " Coins" << endl;
cout << "Tower Range : " << tower->getRange() << " paths" << endl;
cout << "Tower Rate Of Fire : " << tower->getROF() << " p/s" << endl;
cout << "Tower Special Effect : " << tower->getEffect() << "" << endl;
}
int main() {
Tower *t1 = new Tower();
printTowerDetails(t1);
t1 = new IceTower(t1);
printTowerDetails(t1);
}
Output :
Image : http://i.imgur.com/Ws018iV.png

There are at least two serious errors.
The first one is that you check definitions of manifest constants with suffix _H__ but define them without the suffix:
#ifndef __TOWER_H__
#define __TOWER__
and
#ifndef __TOWERDECORATOR_H__
#define __TOWERDECORATOR__
The second one is that you forgot to place a semicolon after class definition of TowerDecorator
class TowerDecorator : public Tower {
//...
}

Well, the first problem that you have is a problem with your include guard. It should be:
#ifndef __TOWER_H__
#define __TOWER_H__
You might have other problems as well.
BTW, you shouldn't use names that begin with two underscores, since they are reserved.

Your header gaurds are inconsistent:-
#ifndef __TOWER_H__
#define __TOWER__
This should be
#ifndef __TOWER_H__
#define __TOWER_H__
Secondly change this
#endif __TOWER_H__
to
#endif

Related

Is there a way to use google test on OOP program?

I'm new to google test and currently I'm writing a test for my OOP program, my OOP program is like this:
#include <iostream>
#include <gtest/gtest.h>
using namespace std;
typedef unsigned int NUM;
class Employee
{
protected:
NUM MaSoThue;
private:
NUM Luong;
NUM CMND;
NUM a;
NUM b;
public:
Employee()
{
MaSoThue = 0;
Luong = 0;
CMND = 0;
}
Employee(NUM mst, NUM luong, NUM cmnd)
{
MaSoThue = mst;
Luong = luong;
CMND = cmnd;
}
//get
int getMaSoThue() const { return MaSoThue; }
int getLuong() const { return Luong; }
int getCMND() const {return CMND;}
//set
void setMaSoThue(NUM mst) {if (MaSoThue==0) MaSoThue = mst;}
void setLuong(NUM luong) {Luong = luong;}
void setCMND(NUM cmnd) {if (CMND==0) CMND = cmnd;}
};
int main()
{
// Objects
Employee PhucTri(111,222,333);
Employee MinhDang;
MinhDang.setMaSoThue(1234);
MinhDang.setLuong(2);
MinhDang.setCMND(8888);
//PhucTri
cout <<"MST cua Phuc Tri: "<< PhucTri.getMaSoThue()<<"\n";
cout << "Luong cua Phuc Tri: " << PhucTri.getLuong() << "\n";
cout << "CMND cua Phuc Tri: " << PhucTri.getCMND() << "\n\n";
//MinhDang
cout << "MST cua Minh Dang: " << MinhDang.getMaSoThue() << "\n";
cout << "Luong cua Minh Dang: " << MinhDang.getLuong() << "\n";
cout << "CMND cua Minh Dang: " << MinhDang.getCMND() << "\n";
}
I created a new file, which is below:
#include <gtest/gtest.h>
#include "FileCode.cc"
int main(){}
TEST(No1, PhucTri){
EXPECT_EQ(PhucTri.getMaSoThue(),111);
}
The compiler says that the object "PhucTri" isn't declared in this scope, but I did create it in my first file, is there any way I can get it right on the object ?
In general, Try to not include .cpp files, declare your class and its methods inside a .h file, define methods in .cpp and then create a test file that includes your header.
You have two options here, either define a test class that has an instance of your class follows instructions here.
Or do something like this :
#include <gtest/gtest.h>
#include "FileCode.h"
TEST(No1, PhucTri)
{
Employee PhucTri(111,222,333);
// initialize your data
// ......
EXPECT_EQ(PhucTri.getMaSoThue(),111);
}

Error occurs when I try to call an inherited function in C++

I have 3 classes, GameObject, Building which inherits from GameObject, and PokemonCenter which inherits from Building. When I try to call a Building::ShowStatus() function in PokemonCenter I keep get a "invalid operands to binary expression" error.
Building.h
#ifndef BUILDING_H
#define BUILDING_H
#include "Point2D.h"
#include "GameObject.h"
class Building : public GameObject
{
private:
unsigned int pokemon_count;
public:
Building();
Building(char,int, Point2D);
void AddOnePokemon();
void RemoveOnePokemon();
void ShowStatus();
bool ShouldBeVisible();
};
#endif
Building.cpp
#include "Building.h"
#include "GameObject.h"
#include <iostream>
using namespace std;
Building::Building()
{
display_code = 'B';
location;
id_num = ' ';
state = '0';
pokemon_count = 0;
cout << "Building default constructed";
}
Building::Building(char in_code,int in_id, Point2D in_loc)
{
id_num = in_id;
location = in_loc;
display_code = in_code;
state = '0';
pokemon_count = 0;
cout << "Building constructed";
}
void Building::ShowStatus()
{
cout << "\"(" << pokemon_count << "\"pokemon is/are in this building";
}
PokemonCenter.h
#ifndef POKEMONCENTER_H
#define POKEMONCENTER_H
#include "Point2D.h"
#include "Building.h"
class PokemonCenter: public Building
{
private:
unsigned int stamina_capacity;
unsigned int num_stamina_points_remaining;
double dollar_cost_per_stamina_point;
PokemonCenter();
PokemonCenter(int,double,unsigned int, Point2D);
public:
bool HasStaminaPoints();
unsigned int GetNumStaminaPointsRemaining();
bool CanAffordStaminaPoints(unsigned int, Point2D);
double GetDollarCost(unsigned int);
unsigned int DistributeStamina(unsigned int);
bool Update();
void ShowStatus();
};
enum PokemonCenterStates
{
STAMINA_POINTS_AVAILABLE = 0,
NO_STAMINA_POINTS_AVAILABLE = 1
};
#endif
PokemonCenter.cpp
#include "PokemonCenter.h"
#include "Point2D.h"
#include "Building.h"
#include "GameObject.h"
#include <iostream>
using namespace std;
PokemonCenter::PokemonCenter()
{
id_num = ' ';
location;
display_code = 'C';
stamina_capacity = 100;
num_stamina_points_remaining = stamina_capacity;
dollar_cost_per_stamina_point = 5;
state = STAMINA_POINTS_AVAILABLE;
cout << "PokemonCenter default constructed";
}
PokemonCenter::PokemonCenter(int in_id, double stamina_cost, unsigned int stamina_cap, Point2D in_loc)
{
id_num = in_id;
location = in_loc;
dollar_cost_per_stamina_point = stamina_cost;
stamina_capacity = stamina_cap;
num_stamina_points_remaining = stamina_capacity;
state = STAMINA_POINTS_AVAILABLE;
cout << "PokemonCenter constructed";
}
void PokemonCenter::ShowStatus()
{
cout << "Pokemon Center Status: " << Building::ShowStatus() << endl;
}
The problem is that the return type of Building::ShowStatus() is void. operator<< is not defined between std::ostream and void. Hence, you can't use
cout << "Pokemon Center Status: " << Building::ShowStatus() << endl;
Change that to:
cout << "Pokemon Center Status: ";
Building::ShowStatus();
cout << endl;

I need help separating class code in C++ LNK2005 and LNK1169

I'm new at C++ and I have to create a simple video game, that has an enemy class, the problem comes when I try to separate the enemy code from the main.cpp, creating enemy.h and enemy.cpp, I followed all instructions I saw on the internet but it keeps showing me the error message I hope you guys can help me.
enemy.cpp file
#include "enemy.h"
enemy::enemy(int _hp, int _attackValue, string _name) {
hp = _hp;
attackValue = _attackValue;
name = _name;
}
void enemy::attack(enemy agressor, enemy objective) {
objective.set_hp(objective.hp - agressor.attackValue);
objective.showinfo(objective, 2);
}
void enemy::showinfo(enemy enemy, int hero) {
if (hero == 1) {
cout << " \n\n\n\n\n\n\n";
cout << enemy.name;
cout << " \n\n\n\n\n\n\n\n";
for (int i = enemy.hp / 5; i > 0; i--) {
cout << "|";
}
cout << " \n\n\n\n\n\n\n\n\n";
cout << enemy.hp;
}
else {
cout << " \n\n\n\n\n\n\n";
cout << enemy.name;
cout << " \n\n\n\n\n\n\n\n";
for (int i = enemy.hp / 5; i > 0; i--) {
cout << "|";
}
cout << " \n\n\n\n\n\n\n\n\n";
cout << enemy.hp;
}
}
int enemy::get_hp() {
return hp;
}
void enemy::set_hp(int _hp) {
hp = _hp;
}
int enemy::get_attackValue() {
return attackValue;
}
string enemy::get_name() {
return name;
}
enemy.h file
#pragma once
#ifndef enemy_H
#define enemy_H
class enemy {
private:
int hp, attackValue;
string name;
public:
enemy();
enemy(int, int, string);
void attack(enemy, enemy);
void showinfo(enemy, int);
int get_hp();
void set_hp(int hp);
int get_attackValue();
string get_name();
};
#endif // !enemy_H
PD: I still don't know how to implement setcursorposition in c++ as you can see.
You have declared enemy() but haven't defined it. If you declare the default constructor, make sure you define it (possibly in your .cpp file)
That error that you get means that you violated ODR (one definition rule). In other words, when you tried to separate your enemy class from your main you didn't remote all the parts from there and ended up with the same code in multiple cpp files.
As a side note, looks like you forgot to define your enemy::enemy() constructor, or forgot to move it from main.cpp to enemy.cpp?

Debug Assertion Failed! Expression: _BLOCK_TYPE_IS_VALID(pHead->nBlockUse)

I know this problem is assessed many times on these forums, but they really are unique to their specific cases most times.
This is a project for a class (on C++ no less), and the point of the project was to remake the classic board game Reversi.
I have toiled through code for hours and finally made a program that will work, or so I thought!
The big problem I am having seems to come from my deconstructor as it's giving me this error many of us have seen. My code is posted below and from my own debugging code (using helpful cout messages) I have determined that the program manages to run to the end of the the Game.cpp class. Only, it stumbles on the deconstructor and crashes before finally "ending nicely".
Board.h
#include <iostream>
#include <cstdlib>
#include <vector>
#ifndef BOARD_H
#define BOARD_H
using namespace std;
enum Piece {LIGHT, DARK, EMPTY, BORDER};
typedef int Move;
Move const NullMove = -1;
int const MAX_SQUARES = 100;
enum Direction {N=0, NE=1, E=2, SE=3, S=4, SW=5, W=6, NW=7};
class Board
{
public:
Board();
void reset();
void display();
void makeMove(Piece, Move);
bool isLegal(Piece, Move);
Piece getWinner();
Piece getPlayer();
void genMoves();
int numMoves();
Move getMove(int) const;
bool gameOver;
private:
Piece board[MAX_SQUARES];
int lightPieces;
int darkPieces;
vector<Move> goodMoves;
static Piece currentPlayer;
vector <int> offset;
};
#endif
Board.cpp
#include <iostream>
#include <cstdlib>
#include <vector>
#include "Board.h"
using namespace std;
Board::Board()
{
reset();
for(int i=0;i<MAX_SQUARES;++i)
{
if(i<11 || i>88 || i%10==0 || i%10==9)
board[i]=BORDER;
}
offset.push_back(10);
offset.push_back(11);
offset.push_back(1);
offset.push_back(-9);
offset.push_back(-10);
offset.push_back(-11);
offset.push_back(-1);
offset.push_back(9);
board[44] = LIGHT;
board[45] = DARK;
board[54] = DARK;
board[55] = LIGHT;
gameOver=false;
}
void Board::reset()
{
for(int i=0; i<MAX_SQUARES;++i)
board[i] = EMPTY;
}
void Board::display()
{
for(int i=0;i<MAX_SQUARES;++i)
{
switch(board[i])
{
case LIGHT:
cout << "|LG|";
break;
case DARK:
cout << "|DR|";
break;
case EMPTY:
cout << "| |";
break;
case BORDER:
if(i<9)
cout << "<0" << i << ">";
else if(i==9)
cout << "<09>\n----------------------------------------\n";
else if(i%10==9)
cout << "<$$>\n----------------------------------------\n";
else if(i%10==0)
cout << "<" << i << ">";
else if(i<11 || i>90)
cout << "<$$>";
break;
}
}
}
void Board::makeMove(Piece p, Move m)
{
genMoves(); //generate valid moves
cout << "generated moves\n";
int good = numMoves(); //gets number of moves
if(good>0) //if there are valid moves
{
cout << "more than 0\n";
for(int i=0;i<goodMoves.size();++i) //checking the valid move list
{
if(m==goodMoves[i]) //if our move is in the list
{
cout << "move was in list\n";
board[m]=p; //change square
if(board[m]==DARK)
cout << "ITS DARK\n";
else if(board[m]==LIGHT)
cout << "ITS LIGHT\n";
else if(board[m]==EMPTY)
cout << "ITS EMPTY WTF WTF WTF\n";
for(int i=0;i<8;++i) //checking directions
{
Piece opp =(p==LIGHT)? DARK : LIGHT; //Making an opposite piece
cout << "made opp\n";
int counter=0;
int toCheck = m+offset[i]; //making the next square to check
if(board[toCheck]==opp) //if it's the opposite colour from player
{
cout << "it was the opposite piece\n";
while(board[toCheck]!=BORDER && board[toCheck]!=EMPTY) //while it's a piece
{
cout << "there was a piece to check\n";
if(board[toCheck]==p && counter>0) //if it's player's piece and counter is higher than 0
{
cout << "this should flip stuff\n";
for(int k=m;k!=toCheck;k = k+offset[i])
{
board[k]=p;
cout << k;
}
break;
}
else
{
cout << "found nothing, keep trying..\n";
toCheck += offset[i]; //if not, step in direction
counter++;
}
}
}
}
}
cout << "move wasn't in list\n";
}
}
currentPlayer=(p==LIGHT)? DARK : LIGHT;
}
bool Board::isLegal(Piece p, Move m)
{
Piece opp =(p==LIGHT)? DARK : LIGHT; //Making an opposite piece
if(board[m]==EMPTY) //Checking that the space we're going is empty
{
for(int i=0;i<8;++i) //checking directions
{
int toCheck = m+offset[i]; //making the next square to check
if(board[toCheck]==opp) //if it's the opposite colour from player
{
while(board[toCheck]!=BORDER && board[toCheck]!=EMPTY) //while it's a piece
{
if(board[toCheck]==p) //if it's player's piece
return true; // if move is valid
else
toCheck += offset[i]; //if not, step in direction
}
}
}
return false; // if there's no valid direction moves
}
else // if it's not empty
return false;
}
Piece Board::getWinner()
{
bool gameDone = true;
for(int i=0;i<MAX_SQUARES;++i)
{
if(board[i]==EMPTY)
gameDone = false;
}
if(gameDone==false)
return EMPTY;
else if(lightPieces>darkPieces)
return LIGHT;
else
return DARK;
}
Piece Board::getPlayer()
{
return currentPlayer;
}
void Board::genMoves()
{
goodMoves.clear();
cout << "generating shit\n";
for(int i=0;i<MAX_SQUARES;++i)
{
if(isLegal(currentPlayer, i))
{goodMoves.push_back(i);
cout << i << " twas a good move\n";}
}
if(goodMoves.size()==0)
gameOver=true;
}
int Board::numMoves()
{
return goodMoves.size();
}
Move Board::getMove(int i) const
{
return goodMoves[i];
}
Piece Board::currentPlayer=DARK;
Player.h
#include <iostream>
#include <cstdlib>
#ifndef PLAYER_H
#define PLAYER_H
#include "Board.h"
using namespace std;
class Player
{
public:
Player(const string&, Piece);
Piece getPiece() const;
virtual void makeMove(Board&)=0;
void setName(string&);
string getName();
private:
string name;
Piece color;
};
#endif
Player.cpp
#include <iostream>
#include <cstdlib>
#include "Player.h"
using namespace std;
Player::Player(const string& n, Piece c)
{
name = n;
color = c;
}
Piece Player::getPiece() const
{
return color;
}
void Player::setName(string& n)
{
name = n;
}
string Player::getName()
{
return name;
}
HumanPlayer.h
#include <iostream>
#include <cstdlib>
#include "Player.h"
#ifndef HUMANPLAYER_H
#define HUMANPLAYER_H
using namespace std;
class HumanPlayer: public Player
{
public:
HumanPlayer(const string&, Piece);
void makeMove(Board&);
};
#endif
HumanPlayer.cpp
#include <iostream>
#include <cstdlib>
#include "Player.h"
#include "HumanPlayer.h"
using namespace std;
HumanPlayer::HumanPlayer(const string& n, Piece c): Player(n,c)
{
}
void HumanPlayer::makeMove(Board& b)
{
Move goTo;
cout << "Please enter the number for the square you would like to move: ";
cin >> goTo;
if(!b.gameOver)
b.makeMove(getPiece(),goTo);
}
ComputerPlayer.h
#include <iostream>
#include <cstdlib>
#include "Player.h"
#ifndef COMPUTERPLAYER_H
#define COMPUTERPLAYER_H
using namespace std;
class ComputerPlayer: public Player
{
public:
ComputerPlayer(Piece p);
private:
static int counter;
//string name;
};
#endif
ComputerPlayer.cpp
#include <iostream>
#include <cstdlib>
#include "ComputerPlayer.h"
using namespace std;
ComputerPlayer::ComputerPlayer(Piece p) : Player("", p)
{
string name = "ComputerPlayer" + char(65+counter);
setName(name);
}
int ComputerPlayer::counter=0;
RandomPlayer.h
#include <iostream>
#include <cstdlib>
#include "ComputerPlayer.h"
#ifndef RANDOMPLAYER_H
#define RANDOMPLAYER_H
using namespace std;
class RandomPlayer : public ComputerPlayer
{
public:
RandomPlayer(Piece);
void makeMove(Board&);
};
#endif
RandomPlayer.cpp
#include <iostream>
#include <cstdlib>
#include "RandomPlayer.h"
using namespace std;
RandomPlayer::RandomPlayer(Piece p) : ComputerPlayer(p)
{
}
void RandomPlayer::makeMove(Board& b)
{
cout << "Player 2 making move in stuff\n";
b.genMoves();
int temp1 = b.numMoves();
cout << "This is temp1: " <<temp1 << '\n';
int temp2;
if(temp1>0)
{
temp2 = rand()%temp1;
}
//cout << "This is temp2: " <<temp2 << '\n';
if(!b.gameOver)
b.makeMove(getPiece(),b.getMove(temp2));
}
Game.h
// Name: James St-Germain
// Student #: 0270250
#include <iostream>
#include <cstdlib>
#include "Board.h";
#include "HumanPlayer.h"
#include "RandomPlayer.h"
#ifndef GAME_H
#define GAME_H
using namespace std;
class Game
{
public:
Game();
~Game();
void selectPlayers();
Player* nextPlayer();
void play();
void announceWinner();
private:
Board b;
Player *p1;
Player *p2;
bool isRunning;
};
#endif
Game.cpp
// Name: James St-Germain
// Student #: 0270250
#include "Game.h"
#include <iostream>
#include <cstdlib>
#include <string>
using namespace std;
Game::Game(): b(), p1(NULL), p2(NULL), isRunning(true){}
Game::~Game()
{
delete &b;
delete &p1;
delete &p2;
}
void Game::selectPlayers()
{
string choice[2];
cout << "Is player 1 a human player or computer player? (H/C): \n";
cin >> choice[0];
cout << "Is player 2 a human player or computer player? (H/C): \n";
cin >> choice[1];
for(int i=0;i<2;++i)
{
if(choice[i]=="H")
{
string n;
char* c;
cout << "What is your name?: \n";
cin >> n;
if(i==0)
p1 = new HumanPlayer(n, LIGHT);
else
p2 = new HumanPlayer(n, DARK);
}
if(choice[i]=="C")
{
if(i==0)
p1 = new RandomPlayer(LIGHT);
else
p2 = new RandomPlayer(DARK);
}
}
cout << "Player 1 is " << p1->getName() << '\n';
cout << "Player 2 is " << p2->getName() << '\n';
}
Player* Game::nextPlayer()
{
if(b.getPlayer()==LIGHT)
return p2;
else
return p1;
}
void Game::play()
{
while(isRunning)
{
b.display();
Piece temp = b.getPlayer();
if(temp==LIGHT)
{
cout << "Player 1 moves!\n";
p1->makeMove(b);
}
else
{
cout << "Player 2 moves!\n";
p2->makeMove(b);
}
if(b.gameOver==true)
break;
}
}
void Game::announceWinner()
{
Piece winner = b.getWinner();
string name = (winner==LIGHT) ? p1->getName() : p2->getName();
cout << "The winner is " << name << "! Congratulations!\n";
}
main.cpp
#include <iostream>
#include <cstdlib>
#include "Game.h"
using namespace std;
int main()
{
Game Reversi = Game();
Reversi.selectPlayers();
Reversi.play();
Reversi.announceWinner();
}
I apologize for the extreme amount of code, but at this point, I don't know what to fix. I know there might also be bad coding habits here, so if you see any, I would love the constructive criticism.
Thank you in advance for all your help!!
This is probably because you have these declarations in the Game class:
Board b;
Player *p1;
Player *p2;
and this code in the destructor:
delete &b;
delete &p1;
delete &p2;
First of all, the Board member b is not a pointer so should not be deleted. Second of all, you're using the address-of operator to get the address of the pointer (and it will be a value of type Player**), which you don't allocate. Drop the &.

Double declaration c++

So I have some code in couple of files:
cells.cpp:
#include "cells.h"
#include <iostream>
using namespace std;
char convertIntChar (int symbolNumber)
{
char charR;
switch (symbolNumber)
{
case 0:
charR='0';
break;
// lust of case code here
case 63:
charR='\\';
break;
}
return charR;
}
class cell
{
public:
int iPosition;
char chPosition;
cell ()
{
static int i = -1;
i++;
chPosition=convertIntChar (i);
iPosition=i;
cout << " " << iPosition; //two lines of code to test
cout << " " << chPosition; //constructor
}
protected:
};
main.cpp
#include <iostream>
#include "cells.h"
#include "pointer.h"
using namespace std;
int main()
{
cout << "Hello world!" << endl;
createPointer();
cell cells[64];
return 0;
}
And comeplytly a cells.h
#ifndef CELLS_H_INCLUDED
#define CELLS_H_INCLUDED
#pragma once
class cell
char convertIntChar(int symbolNumber);
#endif // CELLS_H_INCLUDED
There I have an erros that sounds like
//filepath\|5|error: two or more data types in declaration of 'convertIntChar'|
||=== Build finished: 1 errors, 0 warnings (0 minutes, 7 seconds) ===|
What can it be. Sorry for noob question anyway.
First, this forward declaration needs a semi-colon:
class cell;
// ^
Second, you cannot use a forward declaration here. main.cpp needs to see the cell class definition. So you should put the definition in cells.h. For example:
cells.h:
#ifndef CELLS_H_INCLUDED
#define CELLS_H_INCLUDED
class cell
{
public:
int iPosition;
char chPosition;
cell ();
};
char convertIntChar(int symbolNumber);
#endif
cells.cpp:
#include "cells.h"
#include <iostream>
char convertIntChar (int symbolNumber)
{
char charR;
// as before
return charR;
}
cell::cell ()
{
static int i = -1;
i++;
chPosition=convertIntChar (i);
iPosition=i;
std::cout << " " << iPosition; //two lines of code to test
std::cout << " " << chPosition; //constructor
}
You have class cell in the cpp file which should go into the .h file.
Then in cells.h you are missing a ; after class cell.
Insterad of the forward declaration in cell.h, put the class there.