（持续更新）c++结构体

结构体指针

作用：通过指针访问结构体中的成员

• 利用操作符->可以通过结构体指针访问结构体属性

 

1.指针访问单一结构体

#include <iostream>
#include <string>
#include <ctime>

using namespace std;

struct Student {
    string name;
    int age;
    int score;
};

int main() {
    struct Student stu = {"张三", 18, 45};
    struct Student *p = &stu; //这里必须写&stu不能写stu，因为指针p必须指向地址
    p->score = 89;
    cout << "姓名：" << p->name << "年龄：" << p->age << "分数：" << p->score << endl;
}

 

2.指针访问数组结构体

#include <iostream>
#include <string>
#include <ctime>

using namespace std;

#define num 5

struct Student {
    string name;
    int age;
    int score;
};

int main() {
    struct Student stu[num] = {
            {"张三", 15, 45},
            {"李四", 14, 25},
            {"王五", 15, 75},
            {"赵六", 15, 35},
            {"钱七", 15, 55}
    };
    struct Student *p = stu; //这里必须写stu不能写&stu，这里p指向stu数组的第一个元素
    p->score = 35;
    for (int i = 0; i < num; i++) {
        cout << "姓名：" << p->name << "年龄：" << p->age << "分数：" << p->score << endl;
        p++; //每次p指针往后挪一个
    }

}