Cにおける構造体使用

#define _CRT_SECURE_NO_WARNINGS
#include 
#include 
#include 

/*
1、       
2、       
3、         
4、typedef    
5、             
6、           ，    ，     
*/

//1、       
//struct   
//struct Teacher       
//{}     
struct Teacher
{
	char name[50];
	int age;
};

//2、       
//1.     ，     （  ）
struct Teacher t1; //    


//2.           
struct Teacher2
{
	char name[50];
	int age;
}t3 = {"tom", 66};

struct
{
	char name[50];
	int age;
}t5;

//3、         
//          ，  {}
struct Teacher t7 = { "lily", 18 };

//4、typedef    
typedef struct Teacher3
{
	char name[50];
	int age;
}Teacher3;

struct Teacher3 t8;
Teacher3 t9;

int main(void)
{
	//1.     ，     （  ）
	struct Teacher t2; //    

	printf("%s, %d
", t7.name, t7.age);

	//5、             

	/*
	struct Teacher
	{
		char name[50];
		int age;
	};
	*/
	strcpy(t2.name, "xiaoming");
	t2.age = 22;
	printf("%s, %d
", t2.name, t2.age);

	//       ，      ，        
	struct Teacher *p = NULL;
	p = &t2;
	strcpy(p->name, "xiaojiang");
	p->age = 22;
	printf("%s, %d
", p->name, p->age);

	return 0;
}