chore: Add course material

397/Ex71/Entry.h

@@ -0,0 +1,23 @@
+
+#ifndef ENTRY_H
+#define ENTRY_H
+
+#include <string>
+
+class EntryVisitor;
+
+class Entry {
+  public:
+    Entry(std::string name) : _name(name) {}
+
+    std::string getName() const { return _name; }
+
+    virtual void print(std::string indent = "") const = 0;
+
+    virtual void accept(EntryVisitor &) const = 0;
+
+  private:
+    std::string _name;
+};
+
+#endif