C++primer plus第六版课后编程题答案7.3

7.3

#include <iostream>
using namespace std;
struct box{
	char marker[40];
	float height;
	float width;
	float length;
	float volume;
};
void show(const box b);
void set(box &b);
void main73()
{
	box b[2]={{"mybox",5,6,8,0},{"herbox",10,10,10,0}};//初始化结构数组
	cout<<"now the box valus is :"<<endl;
	cout<<"b[0] is :"<<endl;
	show(b[0]);
	cout<<"b[1] is :"<<endl;
	show(b[1]);
	set(b[0]); //因为我这里是数组，数组传递的时候其实就是传递其引用！
	set(b[1]);
	cout<<"after set ,the box valus is:


";
	cout<<"b[0] is :"<<endl;
	show(b[0]);
	cout<<"b[1] is :"<<endl;
	show(b[1]);

	system("pause");

}
void show(const box b)
{
	cout<<"maker:"<<b.marker<<endl;
	cout<<"height:"<<b.height<<"
"<<b.width<<"
length:"<<b.length<<endl;
	cout<<"volume:"<<b.volume<<endl;
}

void set(box &b)
{
	b.volume=b.height*b.width*b.length;
}