实验二 数组、指针与c++标准库

task 5

info.hpp

#ifndef INFO_HPP
#define INFO_HPP
#include<iostream>
#include<string> 
using namespace std;
class Info
{
    public:
        Info(string x,string y,string z,int a):nickname(x),contact(y),city(z),n(a){}
        void print();
        ~Info(){}
    private:
        string nickname;
        string contact;
        string city;
        int n;
};

void Info::print() 
{
    cout<<"称呼:     "<<nickname<<endl;
    cout<<"联系方式: "<<contact<<endl;
    cout<<"所在城市: "<<city<<endl;
    cout<<"预定人数: "<<n<<endl; 
}

#endif

task5.cpp

#include"info.hpp"
#include<iostream>
#include<string>
#include<vector>
using namespace std;
int main()
{
    cout<<"录入信息：" <<endl;
    cout<<"\n";
    cout<<"称呼/昵称，联系方式（邮箱/手机号），所在城市，预订参加人数"<<endl; 
    const int capacity=100;
    vector<Info> audience_info_list;
    string a,b,c;
    int d,k=0,sum=0;
    while(cin>>a>>b>>c>>d)
    {
        Info A(a,b,c,d);
        audience_info_list.push_back(A);
        sum+=d;
        if(sum>capacity)
        {
            sum-=d; 
            audience_info_list.pop_back();
            cout<<"对不起，只剩"<<capacity-sum<<"个位置"<<endl;
            cout<<"1.输入u,更新预定信息"<<endl;
            cout<<"2.输入q,退出预定"<<endl;
            char x;
            cin>>x;
            cout<<"你的选择："<<x<<endl;
            if(x=='u')
                continue;
            if(x=='q')
                break;
                
            } 
        k++;
    }
    cout<<"截止目前，一共有"<<sum<<"位听众预定参加。预定观众听众信息如下："<<endl;
    for(int it=0;it<k;it++)
    {
        audience_info_list[it].print();
        cout<<endl;
    } 
    return 0;
}

运行结果：

 

 

 

task 6

textcoder.hpp

#ifndef TEXTCODER_HPP
#define TEXTCODER_HPP
#include<iostream>
#include<string>
using namespace std;
class TextCoder
{
    public:
        TextCoder(string x):text(x){}
        ~TextCoder(){} 
        string encoder();
        string decoder();
    private:
        string text;
};

string TextCoder::encoder() 
{
    for(int i=0;i<text.length();++i)
    {
        if((text[i]>='a'&&text[i]<='u')||(text[i]>='A'&&text[i]<='U'))
            text[i]+=5;
        else if((text[i]>='v'&&text[i]<='z')||(text[i]>='V'&&text[i]<='Z'))
            text[i]-=21;
    }
    return text;
}

string TextCoder::decoder() 
{
    for(int i=0;i<text.length();++i)
    {
        if((text[i]>='f'&&text[i]<='z')||(text[i]>='F'&&text[i]<='Z'))
            text[i]-=5;
        else if((text[i]>='a'&&text[i]<='e')||(text[i]>='A'&&text[i]<='E'))
            text[i]+=21;
    }
    return text;
}
#endif

task 6.cpp

#include "textcoder.hpp"
#include <iostream>
#include <string>

int main()
{
    using namespace std;

    string text, encoded_text, decoded_text;

    cout << "输入英文文本: ";
    while (getline(cin, text))
    {
        encoded_text = TextCoder(text).encoder();  // 这里使用的是临时无名对象
        cout << "加密后英文文本:\t" << encoded_text << endl;

        decoded_text = TextCoder(encoded_text).decoder(); // 这里使用的是临时无名对象
        cout << "解密后英文文本:\t" << decoded_text << endl;
        cout << "\n输入英文文本: ";
    }
    
}

运行结果：