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#include<iostream>

#include<string>

using namespace std;

struct User {

    char name[20];

    char sex[5];

    int age;

};

struct Student {

    string name;

    int age;

    int score;

}stu;//第三种

int main() {

    struct User u1;

    strcpy_s(u1.name,"肥学");

    u1.age = 12;

    strcpy_s(u1.sex,"男");

    cout << "name:" << u1.name << "age:" << u1.age << "sex:" << u1.sex << endl;

    struct Student s;

    s.name = "鸣人";

    s.age = 20;

    s.score = 80;

    cout << "name:" <<s.name << " age:" << s.age << " sex:" << s.score << endl;

    struct Student s2={ "pte",20,56 };

    cout << "name:" << s2.name << " age:" << s2.age << " sex:" << s2.score << endl;

    struct User u2 = { "pter","男",20 };

    cout << "name:" << u2.name << " age:" << u2.age << " sex:" << u2.sex << endl;

}

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#include<iostream>

#include<string>

using namespace std;

struct Friend{

    string name;

    int age;

    string sex;

};

struct User {

    string name;

    int age;

    string sex;

    struct Friend f;

};

void addFriend(User* u) {

    Friend f = { "fei",20,"men" };

    u->f = f;

}

void addF2(User& u) {

    Friend f = { "xue",20,"men" };

    u.f = f;

}

int main() {

    //结构体数组

    /*User arru[5];

    arru[0] = { "pter",20,"men" };

    cout << arru[0].name << endl;*/

    //结构体指针

    /*

    User u = { "pter",20,"men" };

    User *p = &u;

    cout << p->name << endl;*/

    //嵌套结构体

    /*

    User u;

    Friend f = { "pter",20,"men" };

    u = { "hello",20,"men",f };

    cout << u.name << "  " << u.f.name << endl;*/

    //***结构体做函数的参数***

    //地址传递

    cout << "地址传递" << endl;

    User u = { "pter",20,"men" };

    cout << "myname:" << u.name << "   fname:" << u.f.name << endl;

    addFriend(&u);

    cout << "myname:" << u.name << "   fname:" << u.f.name << endl;

    //引用传递

    cout << "引用传递" << endl;

    User u2 = { "ppt",20,"men" };

    cout << "myname:" << u2.name << "   fname:" << u2.f.name << endl;

    addF2(u2);

    cout << "myname:" << u2.name << "   fname:" << u2.f.name << endl;

}

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#include<iostream>

#include<string>

using namespace std;

struct User {

    const string name;//感觉像Java  private

    const int age;

    const string sex;

};

void printInfo(const User* u) {

    cout << u->name<<"  " << u->age <<"  " <<u->sex << endl;

}

int main() {

    User u = { "肥学",20,"男" };

    printInfo(&u);

}

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#include<iostream>

#include<string>

#include<ctime>

using namespace std;

typedef struct Student {

    string name;

    int age;

    string sex;

}S;

typedef struct Teacher {

    string name;

    int age;

    string sex;

    S sarray[5];

}T;

void assignment(T* tarray,int len) {

    for (int i = 0; i < len; i++) {

        cout << "请输入老师姓名：" ;

        cin >> tarray[i].name;

        cout << "请输入年龄:";

        cin >> tarray[i].age;

        cout << "请输入性别：";

        cin >> tarray[i].sex;

        for (int s = 0; s < 2; s++) {//为了操作方便就输入两位学生信息

            cout << "请输入学生姓名：";

            cin >> tarray[i].sarray[s].name;

            //cout << "请输入学生年龄:";

            //cin >> tarray[i].sarray[s].age;

            tarray[i].sarray[s].age = rand() % 18 + 8;

            cout << "请输入学生性别：";

            cin >> tarray[i].sarray[s].sex;

        }

    }

}

void printInfo(T* tarray,int tnum) {

    cout << "信息展示：\n" << endl;

    for (int i = 0; i < tnum; i++) {

        cout << "老师姓名："<<tarray[i].name<<endl;

        for (int j = 0; j < 2; j++) {

            cout << "    学生姓名：" << tarray[i].sarray[j].name << endl;

            cout << "    学生姓名：" << tarray[i].sarray[j].age << endl;

            cout << "    学生姓名：" << tarray[i].sarray[j].sex << endl;

        }

    }

}

int main() {

    //随机种子

    srand((unsigned int )time (NULL));

    T tarray[3];

    int tnum = sizeof(tarray) / sizeof(tarray[0]);

    assignment(tarray,tnum);

    printInfo(tarray, tnum);

}

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#include<iostream>

#include<string>

#include<ctime>

using namespace std;

struct staff {

    string name;

    int salary;

};

void initStaff(staff* sarray,int len) {

    string nameseed = "ABCDE";

    for (int i = 0; i < len; i++) {

        int r = rand() % 10000 + 3000;

        string n = "user_";

        string name = n + nameseed[i];

        staff s = {name,r };

        sarray[i] = s;

    }

}

void printInfo(staff* sarray, int len) {

    for (int i = 0; i < len; i++) {

        cout << "姓名：" << sarray[i].name << "  工资：" << sarray[i].salary << endl;

    }

}

void sortSalary(staff* sarray,int len) {

    for (int i = len-1; i >0; i--) {

        for (int j = len-1; j >= len-i; j--) {

            staff maxsalary;

            if (sarray[j].salary > sarray[j - 1].salary) {

                maxsalary = sarray[j];

                sarray[j] = sarray[j - 1];

                sarray[j - 1] = maxsalary;

            }

        }

    }

}

int main() {

    srand((unsigned int)time(NULL));

    staff sarray[5];

    int snum = (sizeof(sarray)) / sizeof(sarray[0]);

    initStaff(sarray, snum);

    printInfo(sarray, snum);

    sortSalary(sarray, snum);

    cout << "\n\n按工资排序后:\n" << endl;

    printInfo(sarray, snum);

}