实验二运算符重载

Xb14610128 C 实验 2 1 实验二 运算符重载 班级 电子信息工程 1 班 学号 Xb14610128 姓名 汪丽娟 1 实验目的 实验目的 1 学习定义和使用重载运算符 2 熟悉拷贝构造函数 2 实验任务实验任务 1 对比通过函数来实现复数相加和通过重载运算符实现复数相加的不同之处 2 定义一个有理数类 Rational 包含分子和分母两个属性 为其重载四则运算和输入输出流 以使用 cin 和 cout 对 Rational 的对象进行输入和输出 3 定义 RMB 类 数据成员有 yuan jf 请为该类定义构造函数 并重载 选做 定义账户类 有账号 户名 余额等属性 具有存款 取款等操作 可以把 RMB 类对象作为成员 进行 存取款操作 4 若有如下类 请重载赋值运算符 解决指针悬挂的问题 3 设计思路 设计思路 1 通过函数来实现复数相加时是在 Complex 类外定义一个 Complex 类的成员函数 Complex add 而通 过重载运算符实现复数相加是运用了 函数 operator 重载了运算符 在执行复数相加时的表达式 c1 c2 时 系统会调用 operator 函数 把 c1 和 c2 作为实参 与形参进行虚实结合 2 用了友元函数实现输入输出 定义 Rational 类使用构造函数来实现调用 重载运算符实现加减 3 用了友元函数实现输入输出 定义 RMB 类使用构造函数来实现调用 重载运算符实现加减 4 列出代码 列出代码 任务一 任务一 通过函数来实现复数相加 include class Complex public Complex real 0 imag 0 Xb14610128 C 实验 2 2 Complex double r double i real r imag i Complex complex add Complex void display private double real double imag Complex Complex complex add Complex c real real c2 real c imag imag c2 imag return c void Complex display cout real imag i endl int main Complex c1 3 4 c2 5 10 c3 c3 plex add c2 cout c1 c1 display cout c2 c2 display cout c1 c2 c3 display return 0 通过重载运算符实现复数相加 include class Complex public Complex real 0 imag 0 Complex double r double i real r imag i Complex operator Complex void display private double real double imag Complex Complex operator Complex c real real c2 real c imag imag c2 imag return c void Complex display cout real imag i endl int main Complex c1 3 4 c2 5 10 c3 c3 c1 c2 cout c1 c1 display cout c2 c2 display cout c1 c2 c3 display return 0 Xb14610128 C 实验 2 3 任务二 任务二 include include include using namespace std class Rational private int numberator int denominator int Gcd int p int q public Rational Rational int a int b void set int a int b void Print Rational Add Rational a void Div Rational a Rational Sub Rational a Rational Mul Rational a Rational Rational numberator 1 denominator 1 Rational Rational int a int b numberator a denominator b void Rational set int a int b numberator a denominator b int Rational Gcd int p int q int r if p q r p p q q r r p q while r 0 p q q r r p q return q void Rational Print cout numberator denominator Rational Rational Add Rational a int tmp Rational v if a numberator 0 v denominator 1 return v v numberator numberator a denominator denominat or a numberator v denominator denominator a denominator tmp Gcd v denominator v numberator v denominator v denominator tmp v numberator v numberator tmp return v Rational Rational Sub Rational a int tmp Rational v v numberator numberator a denominator denominator a numberator v denominator denominator a denominator if v numberator 0 return v tmp Gcd v denominator v numberator v denominator v denominator tmp v numberator v numberator tmp return v Rational Rational Mul Rational a int tmp Rational v if a numberator 0 numberator 0 v numberator 0 v denominator 1 return v v denominator denominator a denominator v numberator numberator a numberator tmp Gcd v denominator v numberator v denominator v denominator tmp v numberator v numberator tmp return v void Rational Div Rational a int tmp Rational v if a numberator 0 Xb14610128 C 实验 2 4 cout 除数为零 无法完成除法运算 endl else if numberator 0 v numberator 0 v denominator 1 v Print else v denominator denominator a numberator v numberator numberator a denominator tmp Gcd v denominator v numberator v denominator v denominator tmp v numberator v numberator tmp v Print int main void cout 本程序模拟有理数的四则运算 n Rational one1 2 3 Rational one2 3 5 Rational hh 1 1 hh one1 Add one2 one1 Print cout one2 Print cout hh Print cout n hh one1 Sub one2 one1 Print cout one2 Print cout hh Print cout n hh one1 Mul one2 one1 Print cout one2 Print cout hh Print cout n one1 Print cout one2 Print cout one1 Div one2 cout n int x1 y1 x2 y2 cout x1 y1 x2 y2 one1 set x1 y1 one2 set x2 y2 hh one1 Add one2 one1 Print cout one2 Print cout hh Print cout n hh one1 Sub one2 one1 Print cout one2 Print cout hh Print cout n hh one1 Mul one2 one1 Print cout one2 Print cout hh Print cout n one1 Print cout one2 Print cout one1 Div one2 cout n return 0 任务三 任务三 Xb14610128 C 实验 2 5 include include using namespace std class RMB public RMB yuan 0 jf 0 RMB operator RMB RMB operator RMB friend ostream void display private int yuan jf ostream return input RMB RMB operator RMB r3 yuan yuan r2 yuan r3 jf jf r2 jf if r3 jf 100 r3 jf r3 jf 100 r3 yuan return r3 RMB RMB operator RMB int temp if yuan r2 yuan temp yuan yuan r2 yuan r2 yuan temp r4 yuan yuan r2 yuan r4 jf jf r2 jf if r4 jf 0 r4 jf r4 jf 100 r4 yuan return r4 void RMB display cout yuan jf r1 r2 r3 r1 r2 r4 r1 r2 cout r3 display cout r4 display return 0 include include using namespace std class RMB public RMB yuan 0 jf 0 RMB operator RMB RMB operator RMB friend ostream void display private int yuan jf ostream Xb14610128 C 实验 2 6 return input RMB RMB operator RMB r3 yuan yuan r2 yuan r3 jf jf r2 jf if r3 jf 100 r3 jf r3 jf 100 r3 yuan return r3 RMB RMB operator RMB int temp if yuan r2 yuan temp yuan yuan r2 yuan r2 yuan temp r4 yuan yuan r2 yuan r4 jf jf r2 jf if r4 jf 0 r4 jf r4 jf 100 r4 yuan return r4 void RMB display cout yuan jf r1 r2 r3 r1 r2 r4 r1 r2 cout r3 display cout r4 display return 0 任务四 任务四 include include include include Xb14610128 C 实验 2 7 using namespace std class String char ptr int n public String char s int a ptr new char strlen s 1 strcpy ptr s n a String operator String String delete ptr void print cout ptr endl String String operator String strcpy ptr p2 ptr return String p2 ptr p2 n int main String p1 Hello 8 String p2 chong qing 10 p2 p1 cout p2 p2 print cout p1 p1 print using namespace std class String char ptr int n public String char s int a ptr new char strlen s 1 strcpy ptr s n a String operator String String delete ptr void print cout ptr endl String String operator String strcpy ptr p2 ptr return String p2 ptr p2 n int main String p1 Hello 8 String p2 chong qing 10 p2 p1 cout p2 p2 print cout p1 p1 print include include using namespace std class String char ptr int n public String char s int a ptr new char strlen s 1 strcpy ptr s n a String operator String String delete ptr void print cout p