Anyone good at C++? need quick help at least point me in the right direction?

Write a function that adds the elements of two 3-D arrays of size [n] [2] [2]. Create and initialize a 3-D array with n=2 where all of the elements are initialized to 2. Test the function by using it to add the array to itself. Next create a 3-D array with n= 3 where all of the elements are initialized to 3. Again test the function by using it to add the array to itself.





2: Write a function to print out the elements of arrays of size [n] [2] [2]. Use the function to print the results from the above two additions.





3: Write another function to add the elements of 3-D arrays of size [n] [2] [2], except use pointer arithmetic inside the function to implement the addition. Test the function.





I know how to create basic functions but as far as arrays, I have no clue even what arrays are. I just need guidance on this, i'm not asking anyone to do this problem. Code examples would be great though.

Anyone good at C++? need quick help at least point me in the right direction?
It's highly unlikely that your teacher would have given you an assignment which asks for three dimensional arrays without you having ever heard of them before. I would suggest listening in class, it'll do wonders.





Your teacher/professor will no doubt be more than happy to explain what an array is and how to use it, and will do a much better job than any online resource, so I would strongly suggest asking him or her. Nevertheless, here's a breif explanation:





Arrays are variables which store a set of values - for instance, an array of integers will let you store a set of integers all under one variable name, and then you access each individual item with [ ]. So for instance, once you've created and filled an array, you can access the first item in the list with 'varName[0]' and the second with 'varName[1]' and so on. Two dimensional arrays are an array of arrays, which you can visualize like a grid or table. And if, for instance, you wanted to access the second item in the third array, you'd say 'twoDArray[3][2]'.
Reply:You really need to just read the chapter on arrays in your text book. Arrays and pointers are fundamentals for the C++ language -- if you don't understand them you will fail at being able to master the language.
Reply:arrays are really a simple concept.


Arrays are basically a collection of variables which belong to the same data type.


for example this a integer array :: 1,34,54,3,45,56,67,34


and its size is eight ,since it has eight elements.


The above example is a one-dimensional array


syntax to declare a 1-dimentional array ::


%26lt;datatype%26gt; %26lt;variable name%26gt;[%26lt;size%26gt;]


example for an integer array :: int numbers[8];


example for a float array :: float numbers[8];


Now to Access a single element value in the array you can use the index number. for example if we take the array example above and use this line of code ::cout%26lt;%26lt;number[1];


the output will be 34. the elements position starts from 0 to n-1 n being the number of elements.





You can have multi dimensional arrays too.


suppose you want to represent a matrix then you can use a two dimentional array. 2 dim arrays will have two indexes like numbers[2][3]. This means the third element in the 2nd row.