1.结构体

#include<iostream>

using namespace std;

struct  student

{

    string name;

    int age;

    int score;

}s3;

struct  teacher

{

    int id;

    string name;

    int age;

    student stu;

};

int main()

{

    //创建具体学生,C++中struct可省略

    //1.struct student s1;

    struct student s1;

    student s5;//省略struct

    s1.name = "xiansifan";

    s1.age = 22;

    s1.score = 100;

    cout << "姓名：" << s1.name << endl;

    cout << "年龄：" << s1.age << endl;

    cout << "分数：" << s1.score << endl;

    //2.struct student s2={....};

    struct student s2 = { "xian",21,90 };

    cout << "姓名：" << s2.name << endl;

    cout << "年龄：" << s2.age << endl;

    cout << "分数：" << s2.score << endl;

    //3.在创建结构体时顺便创建结构体变量

    s3.name = "sifan";

    s3.age = 90;

    s3.score = 89;

    cout << "姓名：" << s3.name << endl;

    cout << "年龄：" << s3.age << endl;

    cout << "分数：" << s3.score << endl;

    //创建结构体数组

    struct student arr[3] =

    {

        {"张三",13,56},

        {"李四",34,34},

        {"王五",34,55}

    };

    arr[2].age = 89;

    arr[2].name = "赵六";

    arr[2].score = 67;

    for (int i = 0; i < 3; i++)

    {

        cout << arr[i].name;

        cout << "  ";

        cout << arr[i].age;

        cout << "  ";

        cout << arr[i].score << endl;

    }

    //结构体指针

    student* p = &s1;

    cout << p->name << endl;

    cout << p->age << endl;

    cout << p->score<<endl;

    cout << "结构体嵌套：" << endl;

    teacher t;

    t.id = 100000;

    t.name = "feifei";

    t.age = 90;

    t.stu.name = "xiansifan";

    t.stu.age = 22;

    t.stu.score = 90;

    cout << t.id << endl;

    cout << t.name << endl;

    cout << t.age << endl;

    cout << t.stu.name << endl;

    cout << t.stu.age << endl;

    cout << t.stu.score << endl;

    system("pause");

    return 0;

}