Creating Multidimensional Array with a Nonconstant value

[one]

Variable inputted- a
The array is of integer type and 3 of the dimensions are known
Eg:

c++:

int array[5][5][5][a]

How would you do that?

For 2d array its like this:

c++:

int **a; int rows=3,cols=4;//3X4 matrix a=new int* [rows]; for(int i=0;i<rows;i++)     *(a+i)=new int[cols];

So what would you do for 4d?

Thanks



Mod Edit: Remember to use syntax tags! Thanks

code:

[syntax="cpp"]Code Here[/syntax]

[OneOffDriveByPoster]

If you understand the following declaration, then see what you can do with it:

c++:

int *array[5][5][5];

[md]

you could use a typedef - always fun...

[wtd]

You should be creating your own wrapper class so all of this munging about in three dimensional arrays is hidden from the main logic of your program.

A hint:

c++:

template <typename T> class Matrix3D {     public:         Matrix3D(size_t x, size_t y, size_t z, T init_val);         // Add member functions as needed to manipulate and access "data".     private:         size_t x_size, y_size, z_size;         T* data;  }; template <typename T> Matrix3D<T>::Matrix3D(size_t x, size_t y, size_t z, T init_val) : x_size(x), y_size(y), z_size(z) {     // Initialize "data" here }