實驗5 多態(tài)性和運算符重載

實驗多態(tài)性和運算符重載姓

貢忠

班：電

學(xué)

序：49一實目通開環(huán)下生多性設(shè)與現(xiàn)了運行多的念掌派類多性本計編方。二實主內(nèi)、、、

有角、正形圓三圖求們自面?？沙槌鰝€類在類聲一虛數(shù)用求積并用界設(shè)各圖形面的方。使成函重實復(fù)四運、輯算關(guān)運；使友函重實字串接算賦運；三實程序1：std;#definePI3.14basepublic:virtual0;}}；basedoubleh;doublew;public:triangle(doubleH,doubleW)h=H;w=W;doublearea()0.5*h*w;base

doublea;public:A)doublearea()a*a;basedoublepublic:radius=Rad;doublearea()PI*radius*radius;base*a,*b,*c;a=newtriangle(2,4);circle(2);cout<<a->areacout<<b->area()<<endl;cout<<c->area()<<endl;程2std;//復(fù)doublereal;//實部doubleimag;//虛部

public:complex(){};Imag)complex(complex&);//用成員函重載實復(fù)數(shù)加法運complex(complex&);//使用員函數(shù)載實現(xiàn)復(fù)數(shù)法運算complex//使用成員函數(shù)載實現(xiàn)數(shù)乘法運算complex(complex&);//使用成員函數(shù)重載現(xiàn)復(fù)數(shù)法運complexoperator&&(complex&);//使用成員函數(shù)重載實現(xiàn)與運算complexoperator||(complex&);//使用成員函數(shù)重實現(xiàn)或算complex();//用成員函數(shù)載實非運算complex//用成員數(shù)重載實現(xiàn)運算print(complex&//輸出果cout<<c.real<<c.imag<<'i'<<"\n";cout<<c.real<<'+'<<c.imag<<'i'<<"\n";complexoperator+(complex&//法complex(real+c.real,imag+c.imag);complexoperator-(complex&c)//減法complexoperator*(complex&c)//法complex(real*-imag*real*c.imag+*complex(complex//法complex((real*c.real++/*c.real**c.real-real*/**complex(complex&//與運算complex(real&&c.real,imag&&c.imag);complex(complex&//運算

complexoperator!//運算complexoperator<(complex&小于運算if(real<c.real)returncomplex-0.0),c2(4.0,-2.0),c3=+c2;cout<<"c1+c2=";c3.print(c3);c3=-c2;c3.print(c3);c3=*c2;cout<<"c1*c2=";c3.print(c3);c3=/c2;c3.print(c3);c3=c1&&c2;c3.print(c3);c3=c1||c2;cout<<"c1||c2=";c3.print(c3);c3=!c1;c3.print(c3);c3=c1<c2;cout<<"輸出部較小復(fù)數(shù)=";程序：#include<string.h>std;StringcharStr[100];public:String(char*friendString(constString&,constString&);print()String

c3.print(c3);

char*str;Stringoperator+(constString&String&b)strcat(str,b.Str);String(str);Stringa1("VisualC++"),a2("6.0"),a3,a4;a1.print();();+a3.