枚举应该以什么格式打印？ ％什么？
这行代码导致编译器报错并进入调试模式
NSLog(@"Attacker card: %@", [attackerCard suit]);
我想知道这是否是由于西装是一个enum值声明为
@property (assign) Suit suit;
其中Suit被声明为
typedef enum {
CLUBS, DIAMONDS, HEARTS, SPADES
} Suit;
Am我的格式有问题，或者问题出在其他地方？
This line of code causes compiler to complain and enter a debug mode
NSLog(@"Attacker card: %@", [attackerCard suit]);
I wonder whether it is due to the fact that suit is an enum value declared as
@property (assign) Suit suit;
Where Suit is declared as
typedef enum {
CLUBS, DIAMONDS, HEARTS, SPADES
} Suit;
Am i doing something wrong with the format or, the problem lies elsewhere?
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枚举类型的具体大小是实现定义的，但它始终是整数类型，因此
%d在大多数情况下都可以工作。如果您需要它非常强大，您需要测试sizeof(Suit)并基于此选择一种格式。The specific size of an enumerated type is implementation defined but it's always an integer type, so
%dwill work most of the time. If you need it to be very robust, you'll want to testsizeof(Suit)and choose a format based on that.