Correct field's initialization

include/Infantry.h

@@ -0,0 +1,14 @@
+#pragma once
+#include "Soldier.h"
+class Infantry : public Soldier {
+public:
+	Infantry() : Soldier() {};
+	int step() override
+	{
+		return 10;
+	}
+	void fire() override
+	{
+		return;
+	}
+};