C++ Tutorial - Classes

RE: C++ Tutorial - Classes

Former Member — Thu, 17 Sep 2015 19:27:12 GMT

Hey guys,

Could somebody explain me what this peace of code actually does?! Thanks in advance [View:/resized-image/__size/16x16/__key/commentfiles/f7d226abd59f475c9d224a79e3f0ec07-6a83162b-2805-4354-9c58-0f44aa3ca633/contentimage_5F00_1.png:16:16]

Inventory() :

Grapes(10),

Blueberries(3),

Strawberries(0),

Raspberries(0)

{

Money = 25.00;

}

RE: C++ Tutorial - Classes

Former Member — Tue, 31 Mar 2015 16:13:44 GMT

Again, the lesson does not compile. Nor were instructions provided as to how to (correctly) call the dependent files from the main function. Was not even discussed. [edited out]

I worked hard to find the problem, because I like how this tutorial has gotten me through a lot of material very quickly, in spite of the omissions. I suppose I learn by doing. So I will finish the tutorial.

RE: C++ Tutorial - Classes

oneleggedredcow — Wed, 06 Mar 2013 00:34:12 GMT

Interesting note that I learned while researching this article: In C++, a struct can have methods and they are declared just like a class. (I thought you had to use pointers to make it happen.) So, the only difference is the public/private by default. As a matter of style, it is probably better to use a struct when you are just storing data and a class when you are going to have data and functions. (Even after using C++ for years, you still learn something new all the time.) Here’s what Inventory looks like as a struct:

struct Inventory

{

double Money;

int GrapesCount;

void BuyGrapes(int quantity, double price)

{

if(price * quantity <= Money)

{

Money -= price * quantity;

GrapesCount += quantity;

}

else

{

cout << "You don't have enough money." << endl;

}

void SellGrapes(int quantity, double price)

{

if(GrapesCount >= quantity)

{

Money += price * quantity;

GrapesCount -= quantity;

}

else

{

cout << "You don't have enough grapes." << endl;

}

};