C-程序设计教程-面向对象分册(郑秋生)完整答案.pdf

第 1 章 类和对象 一、 选择题 1.C 2.B 3.C 4.A 5.C 6.A 7.C 8 C 9A 10 C 二、阅读题 1．x=2,y=3 2 ．x=2,y=3 x!=y 3． Cstatic::va1=0 cs1.vaI=1 cs2.val=2 cs1.val=4 cs2.vaI=4 四、改错题 #include string.h #include iostream.h class person { public: person(int n,char* nam,char s { num=n; strcpy(name,nam; sex=s; coutConstructor called.endl; } ~person( { coutDestructor called.endl; } void display( { coutnum: endl ; coutname: endl ; coutsex: endl endl ; } private: int num; char name[10]; char sex; }; int main( { person s1(10010,Wang_li,f; s1.display( ; person s2(10011,Zhang_fun,m; s2.display( ; return 0; } 五、编程题 5．1 #include iostream using namespace std; class CBox { public : CBox(double l=0,double w=0,double h=0; double area(; double volume (; private : double lengh; double width; double high; }; CBox::CBox(double l,double w,double h { lengh=l; width=w; high=h; } double CBox::area( { return 2*(lengh*width+lengh*high+width*high; } double CBox::volume ( { return lengh*width*high; } void main( { CBox box1(4,5,6; cout endl ; cout endl ; } 5.2 #include iostream using namespace std; class CPoint { public : CPoint(double a=0,double b=0 { x=a; y=b; } CPoint(CPoint p { x=p.x; y=p.y; } void print( { cout( } private : double x,y; }; class CLine { public: CLine(double x1=0,double y1=0,double x2=0,double y2=0:p1(x1,y1,p2(x2,y2 { } CLine(CPoint x,CPoint y:p1(x,p2(y { } CLine(CLine lin { p1=lin.p1; p2=lin.p2; } void DrawLine( { coutLine form; p1.print(; coutto; p2.print(; coutendl; } void Linedel( { coutdelete lineendl; } void move(CPoint x,CPoint y { coutmove lineendl; p1=x; p2=y; } private : CPoint p1,p2; }; void main( { CPoint point1(1,5,point2(5,8,point3(20,30,point4(40,50; CLine line1(point1,point2; CLine line2(2,3,8,12; line1.DrawLine (; line2.DrawLine (; line2.move(point3,point4; line2.DrawLine (; line2=line1; line2.DrawLine (; line1.Linedel (; } 5