queen_attack: iteration 1

cpp/queen-attack/queen_attack.h

@@ -0,0 +1,28 @@
+#pragma once
+
+#define EXERCISM_RUN_ALL_TESTS
+
+#include <string>
+#include <utility>
+
+namespace queen_attack {
+
+typedef std::pair<int, int> position_t;
+
+class chess_board
+{
+    position_t white_, black_;
+
+public:
+
+    chess_board(position_t white = std::make_pair(0, 3),
+                position_t black = std::make_pair(7, 3));
+
+    const position_t &black() const;
+    const position_t &white() const;
+
+    bool can_attack() const;
+    operator std::string() const;
+};
+
+}