[Solved] error: unexpected unqualified-id before ‘.’ token.

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There are lots of problems in your code:

  • If you create something with new, you have to call also delete on that object
  • the_field should be private
  • you don’t need to define i and j in the class, because they are defined in the for loop already
  • you are ignoring what does the create_field() method returns
  • the size of the grid is not dynamic (use width and height in simialr situations)
  • the_field is pointer to a pointer (2D array in your case), but you are creating just the columns (the rows have to be created also)
  • …

I have fixed it for you, please try it.

    #include <iostream>

    using namespace std;


    class field
    {
    private:
        char** the_field;
        int width;
        int height;

    public:
        // constructor
        field(int w, int h);

        // destructor
        ~field();

        // method
        void print();
    };



    field::field(int w, int h)
    {
        width = w;
        height = h;

        the_field = new char*[width];
        for (int i=0; i<width; i++)
        {
            the_field[i] = new char[height];
            for (int j=0; j<height; j++)
            {
                the_field[i][j] = 'O';
            }
        }
    }


    field::~field()
    {
        for (int i=0; i<width; i++)
            delete[] the_field[i];

        delete[] the_field;
    }


    void field::print()
    {
        for(int i=0; i < width; i++)
        {
            for(int j=0; j < height; j++)
            {
                cout << " " << the_field[i][j] << " ";
            }
            cout << "\n";
        }
    }



    int main()
    {
        field* myfield = new field(14, 14);
        myfield->print();
        delete myfield;

        return 0;
    }

3

solved error: unexpected unqualified-id before ‘.’ token.