struct Person {
    string name;
    int age;
};
Person p("Yang", 10);

struct Person {
    string name,
    int age;
};
Person p;
p.name = "Yang";
p.age = 10;

struct Person {
    string name;
    int age;
};
Person p = { "Yang", 10 };

struct Person {
    string name;
    int age;
};
Person p = new Person("Yang", 10);