C++Note 结构体

语法：struct 结构体名(结构体成员列表);

通过结构体创建变量的方式有三种:

** struct 结构体名 变量名

** struct 结构体名 变量名 = { 成员1数值 ， 成员2数值 };

** 定义结构体时顺便创建变量

#include <iostream>
#include <string>
using namespace std;

//1、创建学生数据类型:学生包括(姓名,年龄,分数)

struct Student
{
    //成员列表
    string name;  //姓名
    int age;      //年龄
    int score;    //分数
}s3;//顺便创建结构体变量 s3为结构体变量

int main() 
{
    //2.通过学生类型创建具体学生
    // struct 关键字可以省略
    Student s4;
    s4.age = 40;
    s4.name = "s4";
    s4.score = 40;
    cout << "姓名: " << s4.name << " " << "年龄: " << s4.age << " " << "分数: " << s4.score << endl;
    //2.1 struct Student s1
    struct Student s1;
    s1.name = "s1";
    s1.age = 10;
    s1.score = 100;
    cout << "姓名: " << s1.name << " " << "年龄: " << s1.age << " " << "分数: " << s1.score << endl;
    //2.2 struct Student s2 = {...}
    struct Student s2 = { "s2",20,200 };
    cout << "姓名: " << s2.name << " " << "年龄: " << s2.age << " " << "分数: " << s2.score << endl;
    //2.3 在定义结构体时顺便创建结构体变量   
    s3.name = "s3";
    s3.age = 30;
    s3.score = 300;
    cout << "姓名: " << s3.name << " " << "年龄: " << s3.age << " " << "分数: " << s3.score << endl;
    system("pause");
    return 0;
}

总结1：定义结构体时的关键字是 struct  不可以忽略

总结2：创建结构体变量时 关键字struct可以忽略

总结3：结构体变量利用操作符  " . " 访问成员