实验任务4
task4.cpp
#include "Complex.hpp" #include <iostream> // 类测试 void test() { using namespace std; Complex c1(1, -8); const Complex c2(6.4); Complex c3(c1); cout << "c1 = "; c1.show(); cout << endl; cout << "c2 = "; c2.show(); cout << endl; cout << "c2.imag = " << c2.get_imag() << endl; cout << "c3 = "; c3.show(); cout << endl; cout << "abs(c1) = "; cout << abs(c1) << endl; cout << boolalpha; cout << "c1 == c3 : " << is_equal(c1, c3) << endl; cout << "c1 == c2 : " << is_equal(c1, c2) << endl; Complex c4; c4 = add(c1, c2); cout << "c4 = c1 + c2 = "; c4.show(); cout << endl; c1.add(c2); cout << "c1 += c2, " << "c1 = "; c1.show(); cout << endl; } int main() { test(); }
Complex.hpp
#pragma once #include <iostream> #include <cmath> using namespace std; //Complex类的声明 class Complex { public: Complex(); Complex(double a, double b); Complex(double a); Complex(const Complex& obj); ~Complex() = default; //成员函数 double get_real() const{ return real; } double get_imag() const{ return imag; } void show() const; void add(Complex c2); //友元函数 friend Complex add(Complex c1, Complex c2); friend bool is_equal(Complex c1, Complex c2); friend double abs(Complex c1); private: double real; double imag; }; Complex::Complex() { real = 0; imag = 0; } Complex::Complex(double a, double b) { real = a; imag = b; } Complex::Complex(double a) { real = a; imag = 0; } Complex::Complex(const Complex& obj):real{obj.real},imag{obj.imag}{} void Complex::show() const { if (imag > 0) { cout << real << " + " << imag << "i"; } else if (imag == 0) { cout << real; } else cout << real << imag << "i"; } void Complex::add(Complex c2){ real += c2.real; imag += c2.imag; } Complex add(Complex c1, Complex c2) { Complex c4; c4.real = c1.real + c2.real; c4.imag = c1.imag + c2.imag; return c4; } bool is_equal(Complex c1, Complex c2) { if (c1.real == c2.real && c1.imag == c2.imag) return true; else return false; } double abs(Complex c1) { return sqrt(c1.real * c1.real + c1.imag * c1.imag); }
使用的测试数据:
c1=(1, -8) , c2=(6.4)
实验任务5
task5.cpp
#include "User.hpp" #include <iostream> // 测试User类 void test() { using std::cout; using std::endl; cout << "testing 1......\n"; User user1("Jonny", "92197", "[email protected]"); user1.print_info(); cout << endl<< "testing 2......\n\n"; User user2("Leonard"); user2.change_passwd(); user2.set_email(); user2.print_info(); cout << endl; User::print_n(); } int main() { test(); }
User.hpp
#pragma once #include<iostream> #include<string> using namespace std; class User { public: User(string mz); User(string mz, string mm, string yx); ~User() = default; //成员函数 void set_email(); void change_passwd(); void print_info(); static void print_n(); private: string name; string passwd; string email; static int count; //静态数据成员声明 }; int User::count = 0; //静态数据成员定义和初始化,使用类名限定 void User::print_n() { cout << "There are " << count << " Users." << endl; } User::User(string mz) :name{ mz }, passwd{ "111111" }, email{""} { count++; } User::User(string mz, string mm, string yx) :name{ mz }, passwd{ mm }, email{ yx } { count++; } void User::set_email() { string address; cout << "enter email address:"; cin >> address; email = address; cout << "email is set successfully..." << endl; } void User::change_passwd() { string old_passwd; string new_passwd; int t = 1; cout << "enter old passwd:"; cin >> old_passwd; do { if (passwd == old_passwd) { cout << "enter new passwd:"; cin >> new_passwd; passwd = new_passwd; break; } else { t++; cout << "passwd input error.Please re-enter again:"; cin >> old_passwd; } } while (t < 3); if (t == 3) { cout << "passwd enter error.Please try after a while." << l; } } void User::print_info() { int length = passwd.length(); cout << "name: " << name << endl; cout << "passwd: "; while (length--) { cout << "*"; } cout << endl; cout << "email: " << email << endl; }
测试数据1:
测试数据2:
标签:cout,对象,double,void,passwd,Complex,实验,User From: https://www.cnblogs.com/mohaolan/p/16804303.html