Array of Objects <NEWBIE>
Just woundering if there is away to make an array of objects, yet at the same time use the constructors within' the class.
//This is DOES NOT WORK. But it's what i want to do.
stock s[2];
s[0]("Toys R Us",50,2.99);
s[1]("iCafe Canada",100, 6.99);
I dont know if this is even possible.
Any help would be appretiated.
Ulysses
It's not possible in standard C++ to pass arguments for arguments to the constructor of different objects in an array. I believe gcc has an extension, however which enables it, but it is still not legal C++. You can get the same result (with the price of calling two constructors for each object), like the following.
Code:stock s[2]; // calls stock's default constructor twice s[0] = stock("Toys R Us",50,2.99); // construct and assign a new stock/ s[1] = stock("iCafe Canada",100, 6.99);
Nope, you can't. I just checked. You can, however, make an array of pointers. Something like this:
That works. Hope that helps!Code:stock *s[2]; s[0] = new stock("Toys R Us",50,2.99); s[1] = new stock("iCafe Canada",100,6.99); s[2] = new stock("Disney",150,8.99); cout << s[0]->GetStockName() << ": " << s[0]->GetStock() << endl; ...
Brendan
Draco dormiens nunquam titillandus
So make the default constructor do nothing...
Code:... stock() {} ...
Oh wait yes you can, I did something way wrong lol. Yes just do that. Lol sorry.
Brendan
Draco dormiens nunquam titillandus
But then you get the responsibility of managing dynamic memory. I would just use a vector.
Code:std::vector<stock> stocks; stocks.push_back(stock("arg1", arg2, etc)); stocks.push_back(stock(...));
Thanx everyone, i used SilentStrike example and it seems to work.
My only issue now is, i have to pass that array to functions, and i'm going to assume that won't be to hard.
But am i losing alot of resources, or is it a poor way to code, if i make an array vs, two seperate objects?
originaly i had
stock s1("Blah", 2,2.33);
stock s2("Blah2", 5,55.55);
But i thought it would be easier and more effencent to pass an array of objects to a FUNCTION rather then passing 2 objects. Is my logic wrong?
Ulysses
Harryp, you write past the end of the array in your code.
I didn't even think about doing that... good ideaOriginally posted by SilentStrike
Code:std::vector<stock> stocks; stocks.push_back(stock("arg1", arg2, etc)); stocks.push_back(stock(...));
Did I? Good Heavens!!! Well, just goes to show how stupid I can really be. As a general rule, I'm always trying to help, but take caution with the advice I give as I'm an idiot lol and it could very well have something wrong with it.
Brendan
Draco dormiens nunquam titillandus
