小编cmc*_*123的帖子

我是 C++ 新手，我想知道是否有人可以帮助我理解为什么

enum difficulty { NOVICE, EASY, NORMAL, HARD, UNBEATABLE };
difficulty myDiffiuclty = EASY

和

enum shipCost { FIGHTER_COST = 25, BOMBER_COST, CRUISER_COST = 50 };
shipCost myShipCost = BOMBER_COST;

有绿色下划线吗？它说它更喜欢枚举类，但是当我将其更改为枚举类时

enum class difficulty { NOVICE, EASY, NORMAL, HARD, UNBEATABLE };
difficulty myDiffiuclty = EASY;

enum class shipCost { FIGHTER_COST = 25, BOMBER_COST, CRUISER_COST = 50 };
shipCost myShipCost = BOMBER_COST;

EASY 变为红色下划线，myShipCost 变为绿色下划线，BOMBER_COST 变为红色下划线，CRUISER_COST 变为红色下划线

const int ALIEN_POINTS = 150;
int aliensKilled = 10;
int score = …