Thread: 2-D Arrays

Hello.

I have a few questions for everyone. We have a large programming assignment we are working on. We have to make a program which arranges rectangles on a giant x,y grid (a bigger rectangle). We have an objects.dat which looks like this:

400 200
20 30 5
10 40 3
25 30 4

The top 2 lines are the width and heighth of our giant rectangle (the "grid"). So first we wrote a code to read in these 2 lines and turn the numbers into variables. We can't figure out how to setup a variable-length array to where the array size is of our variable lengths. We are setting up a large array to pretend it's our grid...so it's size will be the size of the top line in the program.

The lines besides the top line are the smaller rectangles that are supposed to fit. The first number is the width, the next numbers it the heighth, and the final number is how many objects of that size there are. Our program is supposed to arrange each rectangle in an order symmetrical to the center of the grid. The lower left point on the grid is 0,0...the x axis increases with it goes right, and the y axis increases when it goes up.

We would like someone to explain to us how to make an array of variable size...and if anyone has any better ideas of how to arrange rectangles to make them fit, please let us know.

PLEASE HELP US!

With a name like SavesTheDay, why are you asking us?

It's a band, you dolt. You really aren't funny.

It may be a band, but it sounds really arrogant.

int array[][]={ { } };

But then you have to initialize the array with values.

This is not C, its C++ but it works.

int ArraySize=400;

int *Array=new int[ArraySize];



you could also use multiple indirection to create a list of arrays

int **CollectionOfIntArrays;

if it works, and it is an assignment and also knowing that it is posted on a 'C' board then he probably needs the answer in
C.

therefore to change the C++ to C

int arraysize=400;
int *array = (int*) malloc( arraysize * sizeof(int));

that should also do it.

kwigibo

Sounding arrogant would be naming myself:

"THESMARTESTPROGRAMMERINTHEWORLDWHOHASSEXWITHYOURM OTHEREVERYNIGHTANDWHOKNOWSEVERYTHING"

or I could go with something as BOLD and chicken **** such as "Unregistered"