结构体和typedef

struct Person {
float weight;
float height;
};

struct Person lloyd;
lloyd.weight = 60;
lloyd.height = 175;

typedef struct {
float weight;
float height;
} Person;

Person lloyd; //不用写struct了

typedef char Line[81]; //定义Line为char[81]的数组
Line haha, hehe; //haha 与 hehe都是char[81]类型

char haha[81];
char hehe[81];