CPP

delete 2d dynamic array c++

for (int i = 0; i < numRows; i++) {
    delete [] world[i];
//    world[i] = 0;  // <- don't have to do this
}
delete [] world;  // <- because they won't exist anymore after this
world = 0;

delete specific row from dynamic 2d array c++

string** new_array = array;
for(int i=0; i<numRows; i++){
  new_array = new string[coloumns]
    if(i != n){ // <- if you want to delete nth row then
        new_array[i] = array[i];
    }
}
array = new_array; // <- now array excluding nth row is saved in this pointer.

new and delete 2D array

// let's say we want to dynamically make int[Y][X]:
int** superevil = new int*[Y];
for(int i = 0; i < Y; ++i)
  superevil[i] = new int[X];

// now we can do this:
superevil[2][3] = 1;

// but cleanup is just as ugly as allocation:
for(int i = 0; i < Y; ++i)
  delete[] superevil[i];
delete[] superevil;