内容发布更新时间 : 2024/12/23 10:14:56星期一 下面是文章的全部内容请认真阅读。
cout<<\
}
};
class Circle { Point center; //圆心位置
int radius; //半径
public: Circle(int cx,int cy, int r):center(cx,cy),radius(r) { cout<<\
}
~Circle() {cout<<\
};
void main() {
Circle c(3,4,5); }
3)
#include
}
~Point() { cout<<\
}
};
class Text {
char text[100]; //文字内容 public:
Text(char * str) { strcpy(text,str); cout<<\ }
~Text() {cout<<\
};
31
(
class CircleWithText : public Point,public Text { public: };
void main() { }
CircleWithText cm(3,4,\
CircleWithText(int cx,int cy, char *msg): Point(cx,cy),Text(msg) { }
~CircleWithText() {cout<<\
cout<<\
(4)
#include
void SetDate(int y,int m,int d){ Year=y; Month=m; Day=d; } void PrintDate(){ cout< Date(int y,int m,int d){SetDate(y,m,d);} protected: int Year,Month,Day; }; class Time { public: void SetTime(int h,int m,int s){ Houre=h; Minutes=m; Seconds=s;} void PrintTime() { cout< Time(int h,int m,int s){SetTime(h,m,s);} protected: int Houre, Minutes, Seconds; }; class Date_Time: public Date, public Time { public: 32 Date_Time( ):Date(),Time(){}; Date_Time(int y,int mo,int d,int h,int mi,int s): }; void main( ) { Date_Time dt_a, dt_b(2002,10,1,6,0,0); dt_a.PrintDate_Time(); dt_b.SetTime(23,59,59); dt_b.PrintDate_Time(); dt_a.SetDate(2002,12,31); dt_a.PrintDate_Time(); } Date(y,mo,d), Time(h,mi,s){} void PrintDate_Time(){PrintDate();PrintTime();} (5) #include Date(int y=2001,int m=1,int d=1){Year=y; Month=m; Day=d;} void PrintDate(){ cout< int Year,Month,Day; }; class Time { public: Time(int h=5,int m=30,int s=0){Houre=h; Minutes=m; Seconds=s;} void PrintTime() { cout< int Houre, Minutes, Seconds; }; class Date_Time: public Date, public Time { public: Date_Time( ){}; Date_Time(int y,int mo,int d,int h=0,int mi=0,int s=0): 33 Date(y,mo,d), Time(h,mi,s){} void PrintDate_Time(){PrintDate();PrintTime();} }; void main( ) { Date_Time a, b(2002,10,1,6,20,0), c(2003,3,8,6,7); a.PrintDate_Time(); b.PrintDate_Time(); c.PrintDate_Time(); } 6) #include Base (int i,int j){ x0=i; y0=j;} void Move(int x,int y){ x0+=x; y0+=y;} void Show(){ cout<<\private: int x0,y0; }; class Derived: private Base { public: Derived(int i,int j,int m,int n):Base(i,j){ x=m; y=n;} void Show (){cout<<\ void Move1(){Move(2,3);} void Show1(){Base::Show();} private: int x,y; }; void main( ) { Base b(1,2); b.Show(); 34 ( Derived d(3,4,10,15); d.Move1(); d.Show(); d.Show1(); } 7) #include public: void InitP(float x0=0, float y0=0) {X=x0;Y=y0;} void Move(float xf, float yf) {X+=xf;Y+=yf;} float GetX() {return X;} float GetY() {return Y;} private: float X,Y; }; class Rectangle: public Point { public: void InitR(float x, float y, float w, float h) { InitP(x,y);W=w;H=h; } void ZoomR(float k){W*=k,H*=k;} float GetH() {return H;} float GetW() {return W;} private: float W,H; }; void main() { Rectangle rect; rect.InitR(10,20,30,40);