c ++类成员函数

In the below program, we are creating a C++ program to create an empty class (a class without data members and member functions).

在下面的程序中，我们正在创建一个C ++程序来创建一个空类(一个没有数据成员和成员函数的类) 。

#include <iostream>

using namespace std;

// class definition
class Person {};

// main function
int main() {
  //object creation
  Person per;
  
  // here - we are printing size of the object
  cout << "size of per: " << sizeof(per) << endl;
  
  return 0;
}

Output

输出量

size of per: 1

See the program – here class named Person doesn't have any data member and member function – it will be known as an empty class.

请参阅程序-这里名为Person的类没有任何数据成员和成员函数-将被称为空类 。

翻译自: https://www.includehelp.com/cpp-programs/create-an-empty-class-a-class-without-data-members-and-member-functions.aspx

c ++类成员函数