food chain: initial commit

cpp/food-chain/food_chain.h

@@ -0,0 +1,13 @@
+#pragma once
+
+#define EXERCISM_RUN_ALL_TESTS
+
+#include <string>
+
+namespace food_chain {
+
+std::string verse(int index);
+std::string verses(int from_index, int to_index);
+std::string sing();
+
+}