3D arrays

[Mina Khalid]

Can anyone please tell me the method of declaring a 3D array ?

[whitenite1]

MyArray[][][]; Of course, you add the type of array in front of the declaration. That is: int, char, string etc.
Also, inside each set of brackets, put in your sizes.

[Mina Khalid]

and how can we take values in our 3D array from the user ?

[hanst99]

I'd prefer to answer with "you don't - whatever you were trying to do with a 3D array can be done better without one" - actually, unless you're using C, you probably don't wanna use C style arrays at all - use std::vector and std::array instead. Still not for 3D arrays though.

For the sake of completeness, you can declare one like this:

int arr[L][W][H];

where L, W and H are compile time constants, or like this:

int*** arr = new int**[L];
for(int i=0; i< L; ++i) {
     arr[i] = new int*[W];
     for(int j=0; j<W; ++j) {
          arr[i][j] = new int[H];
     }
}

where L, W and H are (positive) integers (don't have to be constant).

[Mina Khalid]

ok..
thanks..