Array

kckc314 · #1 (**permalink**) 04-26-2008, 08:27 AM

can you explain what the below means? as i don't understand the explanation below. if the array has one element, why there are g, 0, null?

"open = { { g, 0, null } }. It simply means open is an array with one element in it, that one element is a node with name g, has a movement cost of 0, and has a parent of null."

can i declare like this in a single dimensional array? array[0]={g, 0, null} array[1]={h, 0.5, g} and so forth? or it must be in a 2-d array?
closed = { { g, 0, null }, { h, 0.5, g }, { b, 1, g }, { d, 1, h }, { a, 2, b }, { c, 2, d }, { e, 2, d }, { f, 3, a } }.

kckc314 · #2 (**permalink**) 04-27-2008, 12:59 AM

hi can i have some feedbacks?

HelloWorld · #3 (**permalink**) 04-27-2008, 02:54 AM

Quote:

Originally Posted by kckc314

can you explain what the below means? as i don't understand the explanation below. if the array has one element, why there are g, 0, null?

"open = { { g, 0, null } }. It simply means open is an array with one element in it, that one element is a node with name g, has a movement cost of 0, and has a parent of null."

can i declare like this in a single dimensional array? array[0]={g, 0, null} array[1]={h, 0.5, g} and so forth? or it must be in a 2-d array?
closed = { { g, 0, null }, { h, 0.5, g }, { b, 1, g }, { d, 1, h }, { a, 2, b }, { c, 2, d }, { e, 2, d }, { f, 3, a } }.

You can't declare an array that way, what are you trying to do? I'm not that familiar with C++, but as far as only declaring an array, you should use:

Code:

#include <iostream>
using std::cout;
using std::endl;

#include <iomanip>
using std::setw;

int main()
{
   int n[ 10 ] = { 2, 7, 4, 8, 5, 4, 9, 7, 6, 3 };
   
   for ( int i = 0; i < 10; i++ )
      cout << n[ i ] << endl;

   return 0;
}

I think there's also this thing called dynamic array in C++, but you can't use the

Code:

{ }

thing right when you instantiate it because of it's "dynamic" on the running time...

I'm not sure on what are you trying to do, but it seems that there are multiple types of data that you want to store in an array? I'm not sure if you could do that in C++, but you can't definitely do that in Java

The solution if you want to store an array that way is to have two arrays with the different types, then you have to make sure that the index of the corresponding elements ar the same... makes sense?

MrPickle · #4 (**permalink**) 04-27-2008, 03:39 AM

If you're trying to store more than one thing in a certain position in an array you can always make your own class or struct to hold the information and then have the array hold that class/struct.

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