Breaking News: Grepper is joining You.com. Read the official announcement!

how to return 2d array from function c++

stacklord answered on June 3, 2021 Popularity 9/10 Helpfulness 5/10

answer how to return 2d array from function c++

how to return 2d array from function c++

Comment

 #include <cstdio>

    // Returns a pointer to a newly created 2d array the array2D has size [height x width]

    int** create2DArray(unsigned height, unsigned width)
    {
      int** array2D = 0;
      array2D = new int*[height];
    
      for (int h = 0; h < height; h++)
      {
            array2D[h] = new int[width];
    
            for (int w = 0; w < width; w++)
            {
                  // fill in some initial values
                  // (filling in zeros would be more logic, but this is just for the example)
                  array2D[h][w] = w + width * h;
            }
      }
    
      return array2D;
    }
    
    int main()
    {
      printf("Creating a 2D array2D\n");
      printf("\n");
    
      int height = 15;
      int width = 10;
      int** my2DArray = create2DArray(height, width);
      printf("Array sized [%i,%i] created.\n\n", height, width);
    
      // print contents of the array2D
      printf("Array contents: \n");
    
      for (int h = 0; h < height; h++)
      {
            for (int w = 0; w < width; w++)
            {
                  printf("%i,", my2DArray[h][w]);
            }
            printf("\n");
      }
    
          // important: clean up memory
          printf("\n");
          printf("Cleaning up memory...\n");
          for (int h = 0; h < height; h++) // loop variable wasn't declared
          {
            delete [] my2DArray[h];
          }
          delete [] my2DArray;
          my2DArray = 0;
          printf("Ready.\n");
    
      return 0;
    }

Popularity 9/10 Helpfulness 5/10 Language cpp

Source: stackoverflow.com

Tags: 2d c++ function return

Link to this answer
Share Copy Link

Contributed on Jun 03 2021

stacklord

0 Answers Avg Quality 2/10

how to return 2d array from function c++

Contents

More Related Answers

how to return 2d array from function c++

Grepper

Documentation

Social

Legal

Contact

Oops, You will need to install Grepper and log-in to perform this action.