结构体指针做函数参数

#define _CRT_SECURE_NO_WARNINGS
#include<stdio.h>
#include<stdlib.h>
#include<string.h>

//定义一个结构体
//定义一个数据类型。固定内存大小的别名，还没有分配内存
/*struct Teacher
{
    char name[5];
    int age;
};*/
typedef struct Teacher
{
    char name[64];
    int age;
    int id;
}Teacher;


struct Student
{
    char name[64];
    int age;
}s1,s2;//定义类型 同时定义变量

struct
{
    char name[64];
    int age;

}s3, s4;    //匿名类型 定义变量

//初始化变量的三种方法
//定义变量 然后初始化
//
Teacher t7 = { "aaaaa", 18, 01 };    //全局
struct Student2
{
    char name[64];
    int age;
}s5 = { "names", 21 };

struct
{
    char name[64];
    int age;

}s6 = { "names", 30 };


void copyTeacher01(Teacher *to,Teacher *from)
{
    *to = *from;
}
int main()
{
    Teacher t1 = { "aaaa", 32, 01 };
    Teacher t2;
    t2 = t1;    //=号操作下 编译器的行为
                //C编译器提供简单的赋值操作
    Teacher t3;
    printf("t2.name:%s
",t2.name );
    printf("t2.age:%d
", t2.age);
    copyTeacher01(&t3, &t1);
    printf("t2.name:%s
", t3.name);
    printf("t2.age:%d
", t3.age);
    system("pause");
    return 0;
}