Draw pie chart in c++ program:

int main()

{

                char cmd;

                cout << "Chart desired: Pie  Bar  Scatter  Line  Three-D";

                cout << "\n Press first letter of the chart you want: ";

                cmd = toupper(getch());

                cout << '\n';

                if (cmd == 'P')

                                cout << "Doing pie chart\n";

                else if (cmd == 'B')

                                cout << "Doing bar chart\n";

                else if (cmd == 'S')

                                cout << "Doing scatter chart\n";

                else if (cmd == 'L')

                                cout << "Doing line chart\n";

                else if (cmd == 'T')

                                cout << "Doing 3-D chart\n";

                else cout << "Invalid choice.\n";

return 0;

}