C++结构体（C++结构体定义）

目录

• 一、结构体的定义
• 二、创建具体的变量（3种）
• 三、结构体数组
• 四、结构体指针
• 五、结构体嵌套结构体
• 六、结构体做函数参数
  • 1、值传递
  • 2、地址传递
• 七、结构体中const使用场景
• 总结

一、结构体的定义

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

二、创建具体的变量（3种）

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struct Student s1; s1.name = "张三"; s1.age = 18; s1.score = 90;

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1	struct Student s1 = {"李四" ,19 , 80 }；

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struct Student { string name; int age; int score; }s3; s3.name = "王五"; s3.age = 18; s3.score = 89;

三、结构体数组

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struct Student stuArray[3] = { {"张三" , 20 , 92}, {"李四" , 18 , 89}, {"王五" , 24 , 95} }; stuArray[2].name = "赵六";// 把王五改为赵六 //遍历结构体数组 for(int i =0; i < 3;i++) { cout << "姓名:" << stuArray[i].name << "年龄:" << stuArray[i].age << "分数:" << stuArray[i].score <<endl; }

四、结构体指针

利用操作符-> 可以通过结构体指针访问结构体属性。

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struct Student s = {"张三", 18, 90}; struct Student *p = &s; //通过指针访问结构体变量中的数据 cout << "姓名:" << p->name << endl;

五、结构体嵌套结构体

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struct student { String name; int age; int score; } struct teacher { int id; String name; int age; struct student stu; }

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1 2	teacher t; t.stu.name;

六、结构体做函数参数

1、值传递

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void printStudent(struct Student s1) { cout << "姓名:" <<s1.name << "年龄:" << s1.age << "分数" << s1.score; } int main(){ struct Student s1; s1.name = "张三"; s1.age = 18; s1.score = 95; printStudent(s1); }

2、地址传递

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void printStudent(struct Student * s1) { cout << "姓名:" << p->name << "年龄:" << p->age << "分数" << p->score; } int main(){ struct Student s1; s1.name = "张三"; s1.age = 18; s1.score = 95; printStudent(&s1); }

七、结构体中const使用场景

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void printStudent(const Student * s1) { cout << "姓名:" << p->name << "年龄:" << p->age << "分数" << p->score; } int main(){ struct Student s1; s1.name = "张三"; s1.age = 18; s1.score = 95; printStudent(&s1); }

总结

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原文链接：https://blog.csdn.net/qq_26082507/article/details/120396912