...an array and a class type?
I have this question on the study guide for my final in Intro to programming in C++... It makes no sense to me, because (at least as far as I understand) they are very different. Kinda like what's the difference between apples and oranges.
an array is a container for groups of the same data type. A class is really a struct, and of course the whole idea of having structures is so that we can group dissimilar data - strange question if you ask me...
Code:#include <cmath> #include <complex> bool euler_flip(bool value) { return std::pow ( std::complex<float>(std::exp(1.0)), std::complex<float>(0, 1) * std::complex<float>(std::atan(1.0) *(1 << (value + 2))) ).real() < 0; }
that's what I thought... I'm not sure what he's looking for... I guess just a definition of each
one more related question...
What advantage does a class type have over that of a one dimensional array?
Again... this question seems like it doesn't make a whole lot of sense, because they would be used in different instances for different reasons...
A class/struct can hold multiple different kinds of types, for example
An array, on the other hand, can only store one type.Code:struct Player { int health; float x; float y; float z; string name; };
Code:const int NUM_TRIALS=10; int diceOutcome[NUM_TRIALS];
thank you
yup
arrays are homogeneous
classes/structs are heterogeneous
"The most common form of insanity is a combination of disordered passions and disordered intellect with gradations and variations almost infinite."
also a class can have methods to manipulate it's properties
class can and it definitely *should* have methods. i consider the use of struct with methods or class w/o methods to be really weird. what do you think?
I know that you have an exam, so go to http://www.cprogramming.com/begin.html
and there you will be looking for what is the class and what is the array... and then you will see that you can't make a different between class and array because ... array is something and class is something else...
OK
Good luck in your exam...
C++
The best
I've already taken the test... and I know they are completely different... that is what was confusing me
I hope that you did well
I hope that you did well in your test...
anyway...
You are welcome, here... you can learn... I do learn alot here.. at least I am learning some English...
C++
The best
A struct can't have methods. Unless you get into pointing to a function and that isn't pretty.Originally posted by chomper
class can and it definitely *should* have methods. i consider the use of struct with methods or class w/o methods to be really weird. what do you think?
I have problems seeing the link between Structs and Classes.....
OK, they can both hold data of different intrinsic types (which I assume is what you mean by hetrogenous), but one is a "collection" of various lumps of associated data, and the other is an object template with associated data, methods and properties etc. A bit like comparing people with clocks 'cos they both have hands. (IMHO)
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A class can hold a collection of variables and functions, a struct can only hold a collection of variables. Look at it as if classes are a better structs.
