[C++知识库]C++学习封装

#include<iostream>
using namespace std;

/*
封装：成员变量私有化，提供公共的getter和setter给外界去访问成员变量
*/

class Person{
private:
	int m_age;
public:
	void setAge(int age) {
		if (age <= 0) {
			m_age = 1;
		}
		else{
			m_age = age;
		}
	}
	int getAge() {
		return m_age;
	}

};

int main() {
	Person person;
	//person.m_age = 10;
	person.setAge(-4);

	cout << person.getAge() << endl;//1

	getchar();
	return 0;
}