实验四-运算符重载-实验报告.doc

实验报告实验目的：掌握运算符重载的语法要点，学会运算符重载的编程方法。实验内容：（1）先读程序，预测程序的输出结果，再运行程序验证程序的输出。用友元重载方式重新编写次程序。#include class Vector public:Vector()Vector(int i,int j) x=i;y=j;friend Vector operator+=(Vector v1,Vector v2) v1.x+=v2.x; v1.y+=v2.y; return v1;Vector operator-=(Vector v) Vector temp;temp.x=x-v.x; temp.y=y-v.y; return temp;void display() cout(x,y)endl;private:int x,y;void main() Vector v1(1,2),v2(3,4),v3,v4; v3=v1+=v2; v4=v1-=v2; coutv1=; v1.display(); coutv2=; v2.display(); coutv3=; v3.display(); coutv4=; v4.display();运行结果：v1=(1,2)v2=(3,4)v3=(4,6)v4=(-2,-2)Press any key to continue用友元重载方式重新编写次程序：#include using namespace std;class Vectorpublic:Vector(int i = 0,int j = 0)x=i;y=j;friend Vector operator+=(Vector &v1,Vector &v2) v1.x+=v2.x;v1.y+=v2.y;return v1;friend Vector operator-=(Vector &v1,Vector &v2) v1.x=v1.x-v2.x;v1.y=v1.y-v2.y;return Vector( v1.x, v1.y);void display() cout(x,y)endl;private:int x,y;void main()Vector v1(1,2),v2(3,4),v3,v4;v3 = v1+=v2;v4 = v1-=v2; coutv1=; v1.display();/1,2coutv2=; v2.display();/3,4coutv3=; v3.display();/4,6coutv4=; v4.display();/1,2运行结果：v1=(1,2)v2=(3,4)v3=(4,6)v4=(-2,-2)Press any key to continue（2）定义一个有理数类，重载比较运算符.写一个完整的程序，进行数据成员的设置和输出。#includeclass rationalprivate: long denom,den; public:rational(long num=0, long denom1=1)denom=num;den=denom1;int operator(rational r) constdouble x,y;x=denom*1.0/den;y=r.denom*1.0/r.den;if(xy)return 1;return 0;int operator=(rational r) constdouble x,y;x=denom*1.0/den;y=r.denom*1.0/r.den;if(x=y)return 1;return 0;int operator=(rational r) constdouble x,y;x=denom*1.0/den;y=r.denom*1.0/r.den;if(x=y)return 1;return 0;int operator!=(rational r) constdouble x,y;x=denom*1.0/den;y=r.denom*1.0/r.den;if(x!=y)return 1;return 0;void set(long denom1,long den1)denom=denom1;den=den1;void read()coutdenom/denendl;void main()long x,y;coutxy;rational A(x,y);coutxy;rational B(x,y);coutendl;cout有理数A为:;A.read();cout有理数B为:;B.read();if(AB)coutABendl;if(A=B)coutA=Bendl;if(A=B)coutA=Bendl;if(A!=B)coutA!=Bendl;运行结果：请输入A的分子和分母:2 5请输入B的分子和分母:3 4有理数A为:2/5有理数B为:3/4ABA=BA!=BPress any key to continue（3）设计一个复数类，并重载，/ 和 运算符。写完整程序并调试。#include#includeclass complexpublic:float real,imag; public: complex(float real=0.0, float imag=0.0);complex operator+(const complex & r);complex operator-(const complex & r);complex operator*(const complex & r);complex operator/(const complex & r);friend ostream& operator(ostream &os,complex &r); ;complex:complex(float x, float y ) real = x;imag = y;complex complex:operator+(const complex & r) complex temp;temp.real = real + r.real;temp.imag = imag + r.imag;return temp;complex complex:operator-(const complex & r) complex temp;temp.real = real - r.real;temp.imag = imag - r.imag;return temp;complex complex:operator*(const complex & r) complex temp;temp.real = real*imag - r.real*r.imag;temp.imag = imag*r.real + real*r.imag;return temp;complex complex:operator/(const complex & r) complex temp; temp.real = (real*r.real + imag*r.imag);temp.imag = (real*r.imag - imag*r.real) / (r.real*r.real + r.imag*r.imag); return temp; os