chore: Add course material

397/Ex71/GroupEntry.h

@@ -0,0 +1,29 @@
+
+#ifndef GROUPENTRY_H
+#define GROUPENTRY_H
+
+#include <map>
+#include <string>
+#include <vector>
+
+#include "Entry.h"
+#include "PersonEntry.h"
+
+class GroupEntry : public Entry {
+  public:
+    GroupEntry(std::string name);
+
+    // print the entire group, including its members
+    // precede the name with the "indent" string
+    void print(std::string indent = "") const;
+
+    // child management
+    void addEntry(const Entry &);
+
+    void accept(EntryVisitor &) const;
+
+  private:
+    std::vector<const Entry *> _entries;
+};
+
+#endif