C++结构体详解
作者：SamRol
这篇文章主要介绍了C++ 结构体与共用体的的相关资料，帮助大家更好的理解和学习c++，感兴趣的朋友可以了解下，希望能够给你带来帮助
一、结构体的定义
struct Student
{
string name;
int age;
int score;
};
二、创建具体的变量（3种）
struct Student s1; s1.name = "张三"; s1.age = 18; s1.score = 90;
struct Student s1 = {"李四" ,19 , 80 }；
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
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。
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
struct student
{
String name;
int age;
int score;
}
struct teacher
{
int id;
String name;
int age;
struct student stu;
}
teacher t; t.stu.name;
六、结构体做函数参数
1、值传递
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
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
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
本篇文章就到这里了，希望能够给你带来帮助，也希望您能够多多关注脚本之家的更多内容！