函数重载与运算符重载.doc

一实验目的及要求1掌握运算符重载的定义及实现。2掌握具有运算符重载的应用。二实验内容在自己的文件夹下建立一个名为exp6的工程，在该工程中做如下操作：定义一个复数类CComplex，通过重载运算符： *，/，直接实现二个复数之间的乘除运算。编写一个完整的程序，测试重载运算符的正确性。要求乘法“*”用成员函数实现重载，除法“/”用友元函数实现重载。两复数相乘的计算公式为：(a+b i)*(c+d i)=(acbd )+(ad+bc) i两复数相除的计算公式为：(a+bi)/(c+di)=(ac+bd)/(c*c+d*d)+(bc-ad)/(c*c+d*d) i成员函数有：(1)无参构造函数初始化为原点并输出如下提示” CComplex无参构造函数 ”(2)带两个参数的构造函数并输出如下提示” CComplex带两个参数的构造函数”(3)拷贝构造函数并输入如下提示” CComplex拷贝构造函数”(4)输出函数void print ()(5)加复数对象运算符重载(6)+(分前+和后+)运算符重载(7)乘法*成员函数重载(8)除法/友元函数重载要求：（1）把点类CComplex的声明放在complex.h文件中（2）把点类CComplex成员函数的定义放在complex.cpp文件中(3) 把main函数的部分放在exp6.cpp中并对如上的运算符重载函数分别进行测试。三实验程序及运行结果#include using namespace std;class Arrayprivate:int *elem;int size;/ 数组元素个数public:Array(int a, int sz): elem(a), size(sz) / 构造函数int GetSize() return size; / 返回数组元素个数int &operator(int pos) return elempos - 1; / 重载下标运算符;int main(void)int a = 1, 2, 3, 4, 5;Array obj(a, 5);obj1 = 8;for (int i = 1; i = obj.GetSize(); i+)/ 依次输出数组各元素之值cout obji ;/ 输出第i个元素cout endl;system(PAUSE); return 0; 2.#include using namespace std;class Complexprivate:double realPart;double imagePart;public:Complex(double real = 0, double image = 0): realPart(real), imagePart(image) double GetRealPart() const return realPart; / 返回实部double GetImagePart() const return imagePart; / 返回虚部Complex operator+(const Complex &a) const/ 重载加法运算符+Complex b;b.realPart = this-realPart + a.realPart;/ 和的实部b.imagePart = this-imagePart + a.imagePart;/ 和的虚部return b;int main(void)Complex a(1, 2), b(2, 6), c;/ 定义复数对象c = a + b;cout a= a.GetRealPart() + a.GetImagePart() i endl;/ 显示acout b= b.GetRealPart() + b.GetImagePart() i endl;cout c= c.GetRealPart() + c.GetImagePart() i endl;system(PAUSE); 3.#include using namespace std;class Integerprivate:int val;public:Integer() val = 0; / 无参数的构造函数Integer(int v) val = v; / 带参数的构造函数/15void Show() cout val endl; ;int main(void)Integer a(2), b;a.Show();b.Show();system(PAUSE); return 0; 4.#include using namespace std;/ 日期类class Dateprivate:/ 数据成员:int year;int month;int day;public:Date(int y = 1, int m = 1, int d = 1): year(y), month(m), day(d) void SetYear(int y) year = y; / 设置年 void SetMonth(int m) month = m; void SetDay(int d) day = d; int GetYear() const return year; int GetMonth() const return month; int GetDay() const return day; Date operator+(int days);Date operator-(int days);static bool IsLeapyear(int y);static int GetYearDays(int y);static int GetMonthDays(const Date &d);static int DateToNum(const Date &d);static Date NumToDate(int n);ostream &operator(istream &in, Date &d);/ 日期类及相关函数的实现部分Date Date:operator+(int days)int n = DateToNum(*this) + days;return NumToDate(n);Date Date:operator-(int days)/ 返回当前日期减去天数后得到的日期int n = DateToNum(*this) - days;return NumToDate(n);bool Date:IsLeapyear(int y)/ 判断年份y是否为润年if (y % 4 = 0 & y % 100 != 0 | y % 400 = 0) return true;/ 润年else return false;int Date:GetYearDays(int y)if (IsLeapyear(y) return 366;else return 365;int Date:GetMonthDays(const Date &d)int n;switch (d.GetMonth()case 1:case 3:case 5:case 7:case 8:case 10:case 12:n = 31;break;case 4:case 6:case 9:case 11:n = 31;break;case 2:if (IsLeapyear(d.GetYear() n = 29;else n = 28;return n;int Date:DateToNum(const Date &d)int y, n = 0;for (y = 1; y d.GetYear(); y+)n += GetYearDays(y);for (int m = 1; m GetYearDays(y); y+)rest -= GetYearDays(y);for (m = 1; rest GetMonthDays(Date(y, m, 1); m+)rest -= GetMonthDays(Date(y, m, 1);d = rest;/ 日return Date(y, m, d);ostream &operator(ostream &out, const Date &d)/ 重载输出运算符 out d.GetYear() 年 d.GetMonth() 月 d.GetDay() (istream &in, Date &d)/ 重载输入运算符 int year, month, day;cin year month day;d = Date(year, month, day);return in;/ 返回输入流int main(void)Date d(2008, 8, 18);cout 日期: d endl;cout 日期+10: d + 10 endl;cout 日期-10: d - 10 endl;cout d;cout 日期: d endl;system(PAUSE); return 0; 5.#include using namespace std;class Timeprivate:int hour;int minute;int second;public:Time(int hh = 0, int mm = 0, int ss = 0): hour(hh), minute(mm), second(ss) void SetHour(int hh) hour = hh; void SetMinute(int mm) minute = mm; void SetSecond(int ss) second = ss; int GetHour() const return hour; int GetMinute() const return minute; int GetSecond() const return second; Time operator+(const Time &tm);/ 重载减法运算符-Time operator-(const Time &tm);ostream &operator(istream &in, Time &ym);Time Time:operator+(const Time &tm)int seconds1 = hour * 3600 + minute * 60 + second;/ 当前时间转化为秒数int seconds2 = tm.hour * 3600 + tm.minute * 60 + tm.second;/ 时间tm转化为秒数int seconds = seconds1 + seconds2;/ 秒数相加int hh, mm, ss;hh = seconds / 3600;seconds = seconds % 3600;mm = seconds / 60;ss = seconds % 60;return Time(hh, mm, ss);Time Time:operator-(const Time &tm)int seconds1 = hour * 3600 + minute * 60 + second;int seconds2 = tm.hour * 3600 + tm.minute * 60 + tm.second;int seconds = seconds1 - seconds2;/ 秒数相减int hh, mm, ss;hh = seconds / 3600;seconds = seconds % 3600;mm = seconds / 60;ss = seconds % 60;return Time(hh, mm, ss);ostream &operator(ostream &out, const Time &tm)/ 重载输出运算符 cout tm.GetHour() : tm.GetMinute() : (istream &in, Time &tm)/ 重载输入运算符 int hh, mm, ss;cin hh mm ss;tm = Time(hh, mm, ss);return in;int main(void)Time t1(12, 58, 16), t2(6,