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Multidimensional Array

Aug 26, 2017 at 10:34pm
arczi w (75)
I am required to write a program to generate a 5x6 array, elements of which must be equal to the sum of indices of the line and the column.

That's not the whole task, but for now I will ask only about this and then further if needed.

I wrote something like this below, it either crashes, outputs 0-30 and then 0 at the end or gives a strange 196619 at the end. What did go wrong?

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#include <iostream>
#include <cstdio>

using namespace std;

int main()
{
    int Array[5][6];

    for(int i = 0; i < 5; i++)
    {
        for(int j = 0; i < 6; j++)
        {
            Array[i][j] = i + j;
            printf("%d\n", Array[i][j]);
        }
    }

}
Edit & run on cpp.sh
Aug 26, 2017 at 10:37pm
Moschops (7244)
Here's how you could have found the answer:

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#include <iostream>
#include <cstdio>

using namespace std;

int main()
{
    int Array[5][6];

    for(int i = 0; i < 5; i++)
    {
        for(int j = 0; i < 6; j++)
        {
            printf("i=%d j=%d\n", i, j);
            Array[i][j] = i + j;
            printf("%d\n", Array[i][j]);
        }
    }
}
Edit & run on cpp.sh


Being able to debug your own code is a necessary skill. In this case, your mistake is in this line:

for(int j = 0; i < 6; j++)
Aug 26, 2017 at 11:56pm
arczi w (75)
Well, that went unnoticed.

Can you tell me how do I ouput array's each row? I tried using two do's to make C++ output another row only when the first one is finished in that way:

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int z = 0, x = 0;

do
{
    do
    {
        cout<<Array[z][x];
        x++;
    }while(x != 6);
    z++;
}while(z != 5);


Aug 27, 2017 at 2:06am
arczi w (75)
Nevermind, I added if between while x and z++ so that x comes back to 0 before looping again.

Everything works now, thank you.
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