5 replies to this topic

[Hamed]

Hello,
I want to make dynamic matrix in c++ by using new by I don't know how to define pointers!

[WingedPanther]

Why not use a std::vector?

[Hamed]

I can not use vector!
I need sth like * *p;
I don't know how to use it!

[WingedPanther]

So you need something like a 2d array?

[mnirahd]

Hi,

you can define dynamic array like that

  int rows = 6;  //this is an example this can have any value;

  int column = 6;


  int **DynamicMatrix = new int*[rows]; //we are going to create an integer dynamic matrix

  //The above statement creates memory for rows

  //the following statement creates memory for column for each row!

  for (int i = 0; i < rows; i++)

  {

      DynamicMatrix[i] = new int[columns];

  }

  

I hope this helps!

Munir

[Hamed]

Yes 2ed array.
Thanks!

mnirahd said:

Hi,

you can define dynamic array like that

  int rows = 6;  //this is an example this can have any value;
  int column = 6;

  int **DynamicMatrix = new int*[rows]; //we are going to create an integer dynamic matrix
  //The above statement creates memory for rows
  //the following statement creates memory for column for each row!
  for (int i = 0; i < rows; i++)
  {
      DynamicMatrix[i] = new int[columns];
  }
  

I hope this helps!

Munir