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;
}

Nothing. Now show us the complete program. also use the typedef for the struct like I told you.

Yes.

In main, it's a better idea to actually create an oject
int main()
{
struct mytype mt = fundCalculation(....)

The function is correct, but you don't call it correctly.
Create 3 variables in main x, y, z, give them values and pass their address to the function.

#include<stdio.h>
struct mytype
{
int ok;
char ch;
};

struct mytype fundCalculation(int a,int b,int c)
{
struct mytype tmp;

Yes, but use our function that returns the struct.

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;...

Then instead of ints in the argument list, use pointers to ints.

a pointer to int: int *a = 0;

when you call the function, you need to pass addresses.

so

int x = 4;...

Well it works, good job!

Some tips:
Use this form when declaring a struct.

typedef struct
{
int ok;
char ch;
} mytype;

Ok, let's go step by step.
We will create a struct that has two members, a char and an int.
Go on and declare the struct.

Do you want the function to take pointers as parameters or return a pointer or both?
And why do you want to return 1?

So 1 has to be returned for you to know that the result is the third number. You can do it with only one return value:


char arithmeticOperation(int a, int b, int c)
{
// +
if(a + b == c)...

You can't return two values from a functio using the return statement. Use a struct as you've been told to above:


typedef struct
{
int x, y;
} P;

P getPoint()
{

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:

#include <stdlib.h> /* needed for rand() function */
#include <time.h> /*needed to call srand() (explained below)*/

int main(void)
{
int r = 0;

/* by calling this function, we seed the...

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.

There are a couple of tutorials here (http://www.cprogramming.com/tutorial.html).

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?