13 win condition diagonal

src/main/c/TicTacToe.c

@@ -44,4 +44,13 @@ int Winner(char Feld[3][3]) {
             else return 2;
         }
     }
+    // Überprüfen Diagonalen
+    if ((Feld[0][0] == Feld[1][1] && Feld[1][1] == Feld[2][2]) || (Feld[0][2] == Feld[1][1] && Feld[1][1] == Feld[2][0])) {
+        if (Feld[1][1] != '_') {
+            if (Feld[1][1] == 'X') {
+                return 1;
+            }
+            else return 2;
+        }
+    }
 }