习题1

(*p)obj1: a=100 b=1.2 p->obj2: a=100 b=3.5 (*p)obj2: a=100 b=3.5 p->new: a=100 b=1.2 6、

fun1:9 fun2:18 7、

Now is2004.9.2310:20:50.

五、编程题

1、

#include #include class Book { private:

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char name[20]; char author[20]; float sale; public:

Book(char n[]=\ { strcpy(name,n); strcpy(author,au); sale=s;

} ~Book() { cout<<\析构函数被调用！\

}

void setBook(char n[],char au[],float s) { strcpy(name,n); strcpy(author,au); sale=s;

}

void showBook() { cout<<\ cout<<\ cout<<\

} };

void main() { Book b;

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b.showBook();

b.setBook(\ b.showBook(); }

#include #include class point { public: void set(); void getline(point); private: float x,y,z; };

void point::set() {

cout<<\请输入坐标值:\ cin>>x>>y>>z; }

void point::getline(point p2) {

double l;

l=sqrt((x-p2.x)*(x-p2.x)+(y-p2.y)*(y-p2.y)+(z-p2.z)*(z-p2.z)); cout<<\这两点的距离为\} int main() {

point p1,p2; p1.set();

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2、

p2.set();

p1.getline(p2); return 0;

}

#include using namespace std; class clock { public:

void settime(int newh=0,int newm=0,int news=0); void showtime(); private:

int hour,minute,second; };

void clock::settime(int newh,int newm,int news) {

hour=newh; minute=newm; second=news; }

void clock::showtime() {

cout<<\现在的时间为:\

cout<

clock t1,t2,t3,t4; t1.settime(12,34,12);

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3、