#pragma once
-struct player_type;
-void do_cmd_knowledge_weapon_exp(player_type *player_ptr);
-void do_cmd_knowledge_spell_exp(player_type *player_ptr);
-void do_cmd_knowledge_skill_exp(player_type *player_ptr);
+class PlayerType;
+void do_cmd_knowledge_weapon_exp(PlayerType *player_ptr);
+void do_cmd_knowledge_spell_exp(PlayerType *player_ptr);
+void do_cmd_knowledge_skill_exp(PlayerType *player_ptr);