Basic C# game starting point

using System;
public class MainClass {
    public static void Main(string[] args) {
        int width = 20, height = 15, x = 4, y = 5, running = 1;
        while (running == 1) {
            Console.SetCursorPosition(0,0);
            for(int row = 0; row < height; ++row) {
                for(int col = 0; col < width; ++col) {
                    if (row == y && col == x) {
                        Console.Write("@");
                    } else {
                        Console.Write(".");
                    }
                }
                Console.Write("\n");
            }
            ConsoleKeyInfo key = Console.ReadKey();
            switch(key.Key) {
                case ConsoleKey.UpArrow:   --y; break;
                case ConsoleKey.LeftArrow: --x; break;
                case ConsoleKey.DownArrow: ++y; break;
                case ConsoleKey.RightArrow:++x; break;
                case ConsoleKey.Escape:    running = 0; break;
            }
        }
    }
}