multi-dimension array not working

[human]

Thank you, human

#include <iostream>
#include <string>

using namespace std;

int main()
{
const int numItems = 5;
int arr1[numItems];
int arr2[numItems];

for (int i = 0; i < numItems; ++i)
{
for (int j = 0; j < numItems; ++j)
cout << i * j << " ";
cout << endl;
}


system("pause");
return 0;

}

[m4ster r0shi]

This -> for (int i = 0; i < arr1; ++i) should be -> for (int i = 0; i < numItems; ++i)

Also, this -> for (int j = 0; j < arr2; ++j) should be -> for (int j = 0; j < numItems; ++j)

[Jaymie]

I don't get that error but anyway... I found several things...

Firstly you haven't given the array elements any values - though minor for an example.

I think for (int i = 0; i < arr1; ++i) and for (int j = 0; j < arr2; ++j) is ment to be for (unsigned int i = 0; i < sizeof(arr1)/sizeof(int); ++i) and for (unsigned int j = 0; j < sizeof(arr2)/sizeof(int); ++j). This gets the number of elements in the array, where as before it was returning the memory address of the array (starting location). I gather not the desired result? This would have been the likely cause of the error you stated.

And finally, int arr3[numItems][numItems]; in the above example is not used, though minor. :)

Happy Coding... :P

EDIT: m4ster r0shi's edit is also valid, but it's personal preference to how you do it.

[human]

Awesome! Thank you for your time, it works now. Ive updated my original post to the correct code. Also, my code is outputted as so:
0 0 0 0 0
0 1 2 3 4
0 2 4 6 8
0 3 6 9 12
0 4 8 12 16

Id like it to output like this (without the unnecessary zeros):
0 1 2 3 4
1 1 2 3 4
2 2 4 6 8
3 3 6 9 12
4 4 8 12 16

[m4ster r0shi]

Try cout << (i+1) * (j+1) << " ";