实验任务3
complex.hpp
#pragma once
#include <iostream>
#include <string>
using namespace std;
class User{
public:
User(std::string name, std::string passwd = "111111", std::string email = " "):name{name}, passwd{passwd}, email{email} {n++;}
void set_email();
void change_passwd();
void print_info();
static void print_n();
private:
string name;
string passwd;
string email;
static int n;
};
int User::n = 0;
void User::set_email(){
cout << "Enter email address: ";
cin >> email;
cout << "email is set successfully..." << endl;
}
void User::change_passwd(){
string p, new_passwd;
cout << "Enter old password: ";
cin >> p;
int i = 0;
while (p != passwd){
i++;
cout << "password input error. Please re-enter again: ";
cin >> p;
if (i>=2){
cout << "password input error. Please try after a while" << endl;
break;
}
}
if (p == passwd){
cout << "Enter new password: ";
cin >> new_passwd;
cout << "new password is set successfully..." << endl;
passwd = new_passwd;
} else {
cout << "The entered old password is incorrect." << endl;
}
}
void User::print_info(){
cout << "name: " << name << endl;
cout << "passwd: " << passwd << endl; // Print password without masking. For example, if the password is 12345, it will be displayed as 12345.
cout << "email: " << email << endl;
}
void User::print_n(){
cout << "there are " << n << "users" << endl;
}
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main.cpp
#include"complex.hpp"
void test(){
using namespace std;
Complex c1(3,-4);
const Complex c2(4.5);
Complex c3(c1);
cout<<"c1=";
c1.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;
}
int main(){
test();
}
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实验任务4
uesr.hpp
#pragma once
#include <iostream>
#include <string>
using namespace std;
class User{
public:
User(std::string name, std::string passwd = "111111", std::string email = " "):name{name}, passwd{passwd}, email{email} {n++;}
void set_email();
void change_passwd();
void print_info();
static void print_n();
private:
string name;
string passwd;
string email;
static int n;
};
int User::n = 0;
void User::set_email(){
cout << "Enter email address: ";
cin >> email;
cout << "email is set successfully..." << endl;
}
void User::change_passwd() {
string p, a;
cout << "Enter old password: ";
cin >> p;
int i = 0;
while (p != passwd){
i++;
cout << "password input error. Please re-enter again: ";
cin >> p;
if (i>=2){
cout << "password input error. Please try after a while" << endl;
break;
}
}
if (p == passwd){
cout << "Enter new passwd: ";
cin >> a;
passwd = a; // Add this line to update the password.
cout << "new passwd is set successfully..." << endl;
} else {
cout << "The entered old password is incorrect." << endl;
}
}
void User::print_info(){
string s(passwd.size(), '*'); // This line is not necessary. You can remove it.
// It seems like you are trying to mask the password with '*'. However, the variable 's' is not used anywhere.
// You should directly use 'passwd' instead of 's'.
cout << "name: " << name << endl;
cout << "passwd: " << passwd << endl; // Use 'passwd' instead of 's'.
cout << "email: " << email << endl;
}
void User::print_n(){
cout << "there are " << n << "users" << endl;
}
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task4.cpp
#include "User.hpp"
#include <iostream>
//测试IUser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();
}
View Code
实验任务5
account.hpp
class SavingsAccount {
public:
// ... 其他函数 ...
// 构造函数
SavingsAccount(int date, int id, double rate) {
this->id = id;
this->balance = 0.0;
this->rate = rate;
this->lastDate = date;
this->accumulation = 0.0;
}
// 记录一笔账
void record(int date, double amount) {
lastDate = date;
balance += amount;
accumulation += amount;
total += amount; // 更新total here
}
// 存入现金
void deposit(int date, double amount) {
if (amount > 0) {
record(date, amount);
std::cout << "Deposited: " << amount << " on " << date << std::endl;
total += amount; // 更新total here
}
}
// 取出现金
void withdraw(int date, double amount) {
if (amount > 0 && amount <= balance) {
record(date, -amount);
std::cout << "Withdrew: " << amount << " on " << date << std::endl;
total -= amount; // 更新total here
} else {
std::cout << "Insufficient funds!" << std::endl;
}
}
// 结算利息
void settle(int date) {
double interest = balance * rate / 365 * (date - lastDate); // assuming simple interest here
balance += interest;
accumulation += interest;
total += interest; // 更新total here
lastDate = date; // update the lastDate to current date after settlement
}
// 显示账户信息
void show() const {
std::cout << "Account ID: " << id << std::endl;
std::cout << "Balance: " << balance << std::endl;
std::cout << "Rate: " << rate << std::endl;
std::cout << "Last Date: " << lastDate << std::endl;
std::cout << "Accumulation: " << accumulation << std::endl;
std::cout << "Total: " << total << std::endl; // Add total to the output here
}
private:
double total; // Declare total here
// ... 其他变量 ...
};
View Code
account.cpp
#include "account.h"
#include <cmath>
#include <iostream>
using namespace std;
double SavingsAccount::total = 0;
SavingsAccount::SavingsAccount(int date, int id, double rate):id(id), balance(0), rate(rate), lastDate(date), accumulation(0){
cout << date << "\t#" << id << "is created" << endl;
}
void SavingsAccount::record(int date, double amount){
accumulation = accumulate(date);
lastDate = date;
amount = floor(amount * 100 + 0.5) / 100; //保留小数点后两位
balance += amount;
total += amount;
cout << date << "\t#" << id << "\t" << amount << "\t" << balance <<endl;
}
void SavingsAccount::deposit(int date, double amount) {
record(date, amount);
}
void SavingsAccount::withdraw(int date, double amount){
if (amount > getBlance())
cout << "Error: not enough money" << endl;
else
record(date, -amount);
}
void SavingsAccount::settle(int date){
double interest = accumulate(date) * rate/365; //计算年息
if (interest != 0)
record(date, interest);
accumulation = 0;
}
void SavingsAccount::show() const {
cout << "#" << id << "\tBlance:" << balance;
}
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标签：std,cout,对象,void,passwd,int,实验,email From： https://www.cnblogs.com/grcvafg/p/17781128.html