c++ - 引用结构数组

Question

我正在学习 C++ 中的引用。是否无法创建对结构数组的引用？

struct student {
    char name[20];
    char address[50];
    char id_no[10];
};

int main() {
    student test;
    student addressbook[100];
    student &test = addressbook; //This does not work
}

我收到以下错误:

a reference of type "student &" (not const-qualified) cannot be initialized with a value of type "student [100]"
Error C2440 'initializing': cannot convert from 'student [100]' to 'student &'

Answer 1

引用的类型必须与其引用的内容相匹配。对单个学生的引用不能引用 100 名学生的数组。您的选择包括:

// Refer to single student
student &test = addressbook[0];

// Refer to all students
student (&all)[100] = addressbook;
auto &all = addressbook;               // equivalent