day 10 funny mouse :)

d10.cc

@@ -93,18 +93,20 @@ unsigned p1(const Input &input)
     return sum;
 }
 
+#define WIDTH 40
+
 void p2(const Input &input)
 {
     Cpu cpu(&input);
     while (cpu.running()) {
         // Calculate current CRT line
-        int X = cpu.cycle % 40;
-        if (X == 0) X += 40;
+        int X = cpu.cycle % WIDTH;
+        if (X == 0) X += WIDTH;
 
         // Draw pixel
         if (cpu.X <= X && X <= cpu.X + 2) cout << '#';
         else cout << '.';
-        if (X == 40) cout << endl;
+        if (X == WIDTH) cout << endl;
 
         cpu.tick();
     }