c&c++ type definition typedef

1. Disclaimer

1.1 Structure Declaration:

1     struct {2         int N; 3         Double x, y; 4     };

1.2 declaration with a structural mark

1     struct point{2         Double x, y; 3     };

1.3 Defining the structure type

1.3.1 with no structural markings

struct {point    Center;     Double radius;} CIRCLE;

1.3.2 with structural signs

struct node{    int  data;     struct Node *next;} Node;

2. Defining Structure variables

1 struct point pt1,pt2;  The description form of struct point is also treated as a type

1     struct {2         int N; 3         Double x, y; 4     } St1, St2;

3 Summary

3.1 Structural symbols

struct Node is equivalent to struct {...}

3.2 typedef

typedef struct node node; Replace struct node with node

4 analysis

struct btnode{    int  data;     struct Btnode *lchild;     struct Btnode *rchild;} Btnode,*btnode;

Btnode * p is equivalent to Btnode p;

c&c++ type definition typedef