/C++/How to return 2d array from function c++

How to return 2d array from function c++

 #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;
    }

Source: stackoverflow.com

Similar codes

1 vote153 views1 answer
How to print fixed places after decimal point in c++
C++
70 votes201 views5 answers
Erase element from vector c++
C++
2 votes175 views2 answers
What s[i]-'0' does
C++
38 votes172 views6 answers
Print hello world in c++
C++
4 votes169 views2 answers
Check uppercase c++
C++
0 vote176 views1 answer
9+20
C++
1 vote189 views2 answers
Calling by reference c++
C++
-2 votes186 views2 answers
Constants in cpp
C++
0 vote180 views3 answers
C++ loop maker
C++
1 vote159 views1 answer
C++ visual studio 19 how to make colord button from code
C++