Well try it :)

You overload an operator when it makes sense to do so.

Say that you create a custom string class MyString.

It makes sense to overload the + operator, but not the ~.

Call the copy constructor.

Let me explain:

Shoe shoe1; // calls the constructor
Shoe shoe_copy(shoe1); // copy constructor
Shoe shoe_copy = shoe1; // copy constructor, even if it seems it's...

shoe_copy=shoe1; will call the assignment operator, not the copy constructor. The copy constructor is called for example when you pass an object to a function by value.

// copy constructor called...

You can do that:


bool checkUnsignedInt(const string &str)
{
return atoi(str.c_str()) >= 0;
}

One thing about collisions. At the moment I'm using functions that take 2 arguments. Would it be better if each object had a collision function so I could say:

Sprite s;...

Why do this? Is cin hard to remember? You need to get used it, you'll see it everywhere!! Think of it as "console input", this might help you remember. When I started C++ I was forgetting everything...

Well my main() function has become a mess... What should I do next time to prevent this?



int main(int argc, char *args[])
{
srand((unsigned)time(0));

if(!init())
return 1;

Try darkGDK, it's free and very easy to use. Google it.

Thanks for the replies.

#ifndef DARK_OBJECT_H
#define DARK_OBJECT_H

#include "DarkGDK.h"

namespace DarkObject
{
class Object // abstract
{
public:

void increment(const Machine &aMachine, int amount = 1)
{
rackID = rackID - amount;
}


1. You are...

Oh ok that's fine.

result is a local variable, which is destroyed when the functions ends. So a garbage value is destroyed. The best solution is to do what is said by the poster above.

If you need to work with...

This is just used to show how it's done :)

Why?

------------

@StuXYZ

Yes it does, thanks a lot. I'm not trying to do anything, just to understand :D

Hi, I'm studying operator overloading through C++ the complete referece and I've got some questions.

In the book, the author writes this:


loc loc::operator++()
{
++longitude;
++latitute;

Read this:
http://www.daniweb.com/forums/announcement8-3.html

Just a bit of advice. No one is going to download all these files. You should provide the code with the errors and try to explain. Help us to help you.

Try adding header guards in header.h


#ifndef HEADER_H
#define HEADER_H

#include <iostream> // put your includes in the header file so you don't need to include them in every file that uses...

Exactly. It's the assignment operator in PASCAL and used in pseudocode as well.

Why don't you write this program and see the results?

Do you have to make the class?

Show it to us.

What about defense?

Ok.Isn't it an object? (a class)

What is IteamType?

So your book isn't good.

If you have money and can buy online I recommend Beginning C++ Game programming (http://www.amazon.com/Beginning-C-Game-Programming-Development/dp/1592002056) (it's not...

Show us the definition of the "list".

Do you have any book that you learn from?

edit:
the way you did it, it will ask only once for the answer and the program will terminate. In my version it will keep asking until you enter the...

#include <iostream>
#include <cstdlib>
#include <iomanip>
#include <ctime>
using namespace std;

int main()
{
srand((unsigned)time(0));
int random_integer1 = 1 + rand() % 500;

Oh my god! :-O

const int ANSWER = random_integer1 + random_integer2;


random_integer1 = (rand()%500)+1;
random_integer2 = (rand()%500)+1;


should be

You're welcome.:)

No problem. Post back if you don't get it working.

int MAX_NUM = 600851475143;
int max = 0;

vector <int> ints;
for(int i = 1; i <= MAX_NUM; ++i)
if((int)MAX_NUM % i == 0)
ints.push_back(i);

cout << "size = " << ints.size();

Your error is not related to classes here:

You are trying to display a function(displayCargo()) that returns void. Try this:


void Aircraft::listCargo()
{

for (int i = 0; i <...

replace these "
cin >> answer;
cout << "\n";

return 0;

} "

with that code. You will need to return 0 and close the brace of course :p

int input;
const int ANSWER = random_integer1 + random_integer2;

do
{
cin >> input; // get input
} while(input != ANSWER);
/* this will repeat as long as input is not equal to the answer....

You can have functions in Cargo that return the details and don't change any value.


class Cargo
{
public:
int get_weight() const {return weight;} // the const here means that this function...