//
// Created by 徐昌真 on 2024/10/5.
//
#include <iostream>
#include <cstring>
using namespace std;

//定义一个结构体(类)
struct Info{
    char _name[20];
    int _role;  //老师是0 同学是1
    union {  //用union存放score和course 节省内存
        int score;
        char course[20];
    }_sc;  //创建一个_sc union对象

    //构造一个函数用于传入数据 (构造函数名与类名(构造名)相同)
    Info(const char name[20], int role, int s, const char c[20]) {
        strcpy_s(_name, name);  //交换将name赋予给_name
        _role = role;
        if(role > 0){
            _sc.score = s;
        }else if(role == 0){
            strcpy_s(_sc.course, c);
        }
    }


};

int main() {
    Info a[2] = {  //调用函数 并且创建一个数组用于多次向函数里面传参
            Info("徐昌真",1,100,""),
            Info("徐老师",0,-1,"python"),
    };

    for (int i = 0; i < 2; ++i){
        if(a[i]._role == 1){
            cout << a[i]._name << "的成绩是:" << a[i]._sc.score << endl;
        }else{
            cout << a[i]._name << "教的是" << a[i]._sc.course << endl;
        }

    }



    return 0;
}

输出结果