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为了访问结构的成员,我们使用 成员访问运算符(.) 。成员访问运算符是结构变量名称和我们要访问的结构成员之间的一个句号。您可以使用 struct 关键字来定义结构类型的变量。下面的实例演示了结构的用法:
#include <iostream>
#include <cstring>
using namespace std;
struct Books
{
char title[50];
char author[50];
char subject[100];
int book_id;
};
int main( )
{
struct Books Book1; // 声明 Book1,类型为 Book
struct Books Book2; // 声明 Book2,类型为 Book
// Book1 详述
strcpy( Book1.title, "Learn C++ Programming");
strcpy( Book1.author, "Chand Miyan");
strcpy( Book1.subject, "C++ Programming");
Book1.book_id = 6495407;
// Book2 详述
strcpy( Book2.title, "Telecom Billing");
strcpy( Book2.author, "Yakit Singha");
strcpy( Book2.subject, "Telecom");
Book2.book_id = 6495700;
// 输出 Book1 信息
cout << "Book 1 title : " << Book1.title <<endl;
cout << "Book 1 author : " << Book1.author <<endl;
cout << "Book 1 subject : " << Book1.subject <<endl;
cout << "Book 1 id : " << Book1.book_id <<endl;
// 输出 Book2 信息
cout << "Book 2 title : " << Book2.title <<endl;
cout << "Book 2 author : " << Book2.author <<endl;
cout << "Book 2 subject : " << Book2.subject <<endl;
cout << "Book 2 id : " << Book2.book_id <<endl;
return 0;
}
当上面的代码被编译和执行时,它会产生下列结果:
Book 1 title : Learn C++ Programming
Book 1 author : Chand Miyan
Book 1 subject : C++ Programming
Book 1 id : 6495407
Book 2 title : Telecom Billing
Book 2 author : Yakit Singha
Book 2 subject : Telecom
Book 2 id : 6495700
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