1211.1--Structural Body

Simple structural Body

struct student{

Char name[20]; can be scanf or directly assigned to a value

* If you use char *name when using scanf, no memory is received

Long ID;

int age;

float height;

}；

A struct can only declare variables that cannot be assigned an initial value.

struct student Zhangsan;

struct Student Zhangsan = {"Xiaowang", 2000002,20,180.5};

The structure is accessed using "." : Xiaowang.name

typedef

typedef struct student{

Char name[20]; Cannot use char *name when using scanf without memory reception

Long ID;

int age;

float height;

}student;//typedef take an alias for an existing type

Student Zhangsan;

Student Zhangsan = {"Xiaowang", 2000002,20,180.5};

If you do not add a typedef:

struct student{

Char name[20]; Cannot use char *name when using scanf without memory reception

Long ID;

int age;

float height;

}student;//student is a variable.

struct-Body pointer

Student *s;

If *name is a string s->name = "Xiaowang";

If name[] is an array to receive strcpy (S->name, "Xiaowang");

S->age = 23;

Student *s[5]; Each piece has the address of the structure.

Student XW ={"Xiaowang", 2345,23,164.3};

S[0] =&xw; Each of the struct pointer arrays contains an address, and if you do not give him a memory address, its value is empty and cannot be directly assigned.

S[0]->age = 20;

struct array

Student array[5] ={};

strcpy (Array[0].name, "Xiaowang");

Array[0].age = 23;

1211.1--Structural Body