c++之结构体struct和类class的区别

#include<iostream>
using namespace std;

class student {
    String name;
    int age;
    double score;
};
struct Teacher {
    void show() {
        cout << "姓名：" << name << endl;
        cout << 年龄：" << age << endl;
    }
};

 main() {
    student s1;
    /* 此时这样访问会报错
    s1.name = "tom";
    s1.age = 12;
    s1.score = 99.0;
    */
    Teacher t1;
    t1.name = tom";
    t1.age = 45;
    t1.show();
    system(pause);
    return 0;
}