[C++知识库]C++学习第七十八篇

/*
* 初始化列表
作用：c++提供了初始化列表语法，用来初始化属性
语法：构造函数():属性1(值1),属性2(值2)...{};
*/
#include<iostream>
#include<string>
using namespace std;

class Person
{
public:
	传统方式初始化
	//Person(int a, int b, int c)
	//{
	//	m_A = a;
	//	m_B = b;
	//	m_C = c;
	//}

	//初始化列表方式初始化
	Person(int a, int b, int c) :m_A(a), m_B(b), m_C(c) {};
	void printPerson()
	{
		cout << "m_A:" << m_A << endl;
		cout << "m_B:" << m_B << endl;
		cout << "m_C:" << m_C << endl;
	}
private:
	int m_A;
	int m_B;
	int m_C;
};

int main()
{
	Person p(10, 20, 30);
	p.printPerson();
	system("pause");
	return 0;
}