Deleting 3d dynamic array C++ -

i make 3d dynamic array using code

//layer = 2  //levelsize.x = 100  //levelsize.y = 100  level_array = new int**[layer];      for(int = 0; < layer; ++i)     {         level_array[i] = new int*[(int)levelsize.x];         for(int j = 0; j < levelsize.x; ++j)             level_array[i][j] = new int[(int)levelsize.y];     } 

but when want delete it, program crashes

for(int = 0; != levelsize.x; ++i)     {         for(int j = 0; j != levelsize.y; ++j)         {             delete[] level_array[i][j];         }         delete[] level_array[i];      }     delete[] level_array; 

i don't know wrong in code of deleting array.

please me check code, thanks

you allocate memory array dimensions [layer][levelsize.x][levelsize.y], while deleting operate array dimensions [levelsize.x][levelsize.y][somenting].

for(int = 0; != layer; ++i) //                  ^^^^^ not levelsize.x {     for(int j = 0; j != levelsize.x; ++j)     //                  ^^^^^^^^^^^ not levelsize.y     {         delete[] level_array[i][j];     }     delete[] level_array[i];  } delete[] level_array;