C++ 类成员函数

#include <iostream>
using namespace std;

// 类定义
class Box
{
	public:
		double length;
		double breadth;
		double height;

		// 成员函数声明
		double getVolume(void); // 返回体积
		void setLength(double len);
		void setBreadth(double bre);
		void setHeight(double hei);

};


// 成员函数定义
double Box::getVolume(void)
{
	return length * breadth * height;
}

void Box::setLength(double len)
{
	length = len;
}

void Box::setBreadth(double bre)
{
	breadth = bre;
}

void Box::setHeight(double hei)
{
	height = hei;
}



// 主函数
int main()
{	
	// 创建对象Box1
	Box Box1; 
	// 创建对象Box2
	Box Box2;
	double volume = 0.0;

	// 调用成员函数
	Box1.setLength(1.0);
	Box1.setBreadth(2.0);
	Box1.setHeight(3.0);

	Box2.setLength(4.0);
	Box2.setBreadth(5.0);
	Box2.setHeight(6.0);
	
	volume = Box1.getVolume();
	cout << "Box1的体积：" << volume << endl;

	volume = Box2.getVolume();
	cout << "Box2的体积：" << volume << endl;

	system("pause");
	return 0;

}

标签：Box,setHeight,函数,double,成员,C++,Box1,void,Box2
来源： https://blog.51cto.com/u_14097531/2980801