Lemonade:~/2dSpecCocoa uatec$ gcc *.cpp -o output -framework GLUThuman.h:28: error: 'CollisionHandler' has not been declaredhuman.h:49: error: ISO C++ forbids declaration of 'CollisionHandler' with no typehuman.h:49: error: expected ';' before '*' tokenobstacle.h:33: error: ISO C++ forbids declaration of 'CollisionHandler' with no typeobstacle.h:33: error: expected ';' before '*' tokenhuman.h:28: error: 'CollisionHandler' has not been declaredhuman.h:49: error: ISO C++ forbids declaration of 'CollisionHandler' with no typehuman.h:49: error: expected ';' before '*' tokenobstacle.h:33: error: ISO C++ forbids declaration of 'CollisionHandler' with no typeobstacle.h:33: error: expected ';' before '*' tokenhuman.h:28: error: 'CollisionHandler' has not been declaredhuman.h:49: error: ISO C++ forbids declaration of 'CollisionHandler' with no typehuman.h:49: error: expected ';' before '*' tokenhuman.h:50: error: 'bullet' does not name a typeobstacle.h:33: error: ISO C++ forbids declaration of 'CollisionHandler' with no typeobstacle.h:33: error: expected ';' before '*' tokenobstacle.h:33: error: ISO C++ forbids declaration of 'CollisionHandler' with no typeobstacle.h:33: error: expected ';' before '*' tokenCollisionHandler.h:45: error: 'human' has not been declaredCollisionHandler.h:49: error: ISO C++ forbids declaration of 'human' with no typeCollisionHandler.h:49: error: expected ';' before '*' tokenobstacle.h:33: error: ISO C++ forbids declaration of 'CollisionHandler' with no typeobstacle.h:33: error: expected ';' before '*' tokenCollisionHandler.h:45: error: 'human' has not been declaredCollisionHandler.h:49: error: ISO C++ forbids declaration of 'human' with no typeCollisionHandler.h:49: error: expected ';' before '*' tokenhuman.h:28: error: 'CollisionHandler' has not been declaredhuman.h:49: error: ISO C++ forbids declaration of 'CollisionHandler' with no typehuman.h:49: error: expected ';' before '*' tokenCollisionHandler.h:44: error: 'obstacle' has not been declaredCollisionHandler.h:48: error: ISO C++ forbids declaration of 'obstacle' with no typeCollisionHandler.h:48: error: expected ';' before '*' tokenobstacle.h:33: error: ISO C++ forbids declaration of 'CollisionHandler' with no typeobstacle.h:33: error: expected ';' before '*' tokenCollisionHandler.h:45: error: 'human' has not been declaredCollisionHandler.h:49: error: ISO C++ forbids declaration of 'human' with no typeCollisionHandler.h:49: error: expected ';' before '*' tokenteam.cpp: In member function 'bool team::init(char*, int, int, CollisionHandler*, int)':team.cpp:14: error: no matching function for call to 'CollisionHandler::addHuman(human&)'CollisionHandler.h:45: note: candidates are: void CollisionHandler::addHuman(int*)