Help with 2-D arrays

[yue219]

Language: C++
Im having a little trouble with understanding how to print an 2-D array. I need to print a 4x3 grid. How come i cant print out the array by typing in

cout << Grid << endl;

Everytime i do, i get the number 0012FF1C.
Here is the code that I wrote:

           .
           .       
           .
        const int Row = 4;
    const int Column = 3;
 
    int Grid[Row][Column];
    Grid[0][0] = 1;
    Grid[0][1] = 2;
    Grid[0][2] = 2;
    Grid[1][0] = 3;
    Grid[1][1] = 1;
    Grid[1][2] = 4;
    Grid[2][0] = 5;
    Grid[2][1] = 3;
    Grid[2][2] = 4;
    Grid[3][0] = 5;
    Grid[3][1] = 6;
    Grid[3][2] = 6;
 
        cout << Grid << endl;
 

[Mayur2007]

try this

 
        const int Row = 4;
    const int Column = 3;
        int i,j;
 
    int Grid[Row][Column];
    Grid[0][0] = 1;
    Grid[0][1] = 2;
    Grid[0][2] = 2;
    Grid[1][0] = 3;
    Grid[1][1] = 1;
    Grid[1][2] = 4;
    Grid[2][0] = 5;
    Grid[2][1] = 3;
    Grid[2][2] = 4;
    Grid[3][0] = 5;
    Grid[3][1] = 6;
    Grid[3][2] = 6;
 
for (i=0;i<4;i+)
{
    for(j=0;j<3;j++)
    {
        cout << Grid [i][j]<< endl;
    }
}
 

might they useful to u.

Mayur

[yue219]

try this

 
        const int Row = 4;
    const int Column = 3;
        int i,j;
 
    int Grid[Row][Column];
    Grid[0][0] = 1;
    Grid[0][1] = 2;
    Grid[0][2] = 2;
    Grid[1][0] = 3;
    Grid[1][1] = 1;
    Grid[1][2] = 4;
    Grid[2][0] = 5;
    Grid[2][1] = 3;
    Grid[2][2] = 4;
    Grid[3][0] = 5;
    Grid[3][1] = 6;
    Grid[3][2] = 6;
 
for (i=0;i<4;i+)
{
    for(j=0;j<3;j++)
    {
        cout << Grid [i][j]<< endl;
    }
}
 

might they useful to u.

Mayur

Ah, thank you. Hummm... but what is the purpose of a for loop? Could i also use a "while" and "if" loop?

[sicarie]

Ah, thank you. Hummm... but what is the purpose of a for loop? Could i also use a "while" and "if" loop?

You could, but there is no good reason to do that.

Have a look at an explanation of control structures (aka loops).

[yue219]

You could, but there is no good reason to do that.

Have a look at an explanation of control structures (aka loops).

Thank you, thank you =]

[sicarie]

Absolutely. That link includes code examples, so you'll learn a lot by playing around with it. Breaking it and fixing it again.

And please, feel free to post again if you get stuck.