实验3 数组、指针与现代C++标准库

实验任务5

task5.cpp

#include<iostream>
#include<vector>
#include<string>
#include"Info.hpp"
using namespace std;
int main()
{
    const int capacity=100;
    vector<Info> audience_info_list;
    cout<<"录入信息："<<endl;
    cout<<endl; 
    cout<<"昵称\t";
    cout<<"联系方式(邮箱/手机号)\t"; 
    cout<<"所在城市\t"; 
    cout<<"预定参加人数\t";
    cout<<endl;
    string nickname,contact,city;
    int n,num=0;
    while(cin>>nickname)
    {
        cin>>contact>>city>>n;
        num+=n;
    if(capacity-num>=0)
    {
        Info p=Info(nickname,contact,city,n);
        audience_info_list.push_back(p);
    }
    else
    {
        num-=n;
        char c;
        cout<<"对不起，只剩"<<capacity-num<<"个位置."<<endl;
        cout<<"1. 输入u,更新(update)预定信息"<<endl;
        cout<<"2. 输入q,退出预定"<<endl;
        cout<<"你的选择：";
        cin>>c;
        cout<<endl;
        if(c =='q') 
        break;
        else if(c =='u')
        {
            cout<<"请更新您的预定信息"<<endl;
            continue; 
        }
    }
}
    cout<<"截至目前，一共有"<<num<<"名听众预定参加。预定听众信息如下："<<endl;
    for(int i=0;i<audience_info_list.size();++i)
    {
        audience_info_list.at(i).print();
        cout<<endl;
     } 
}

Info.hpp

#pragma once
#include<iostream>
#include<iomanip>
#include<string>
using namespace std;
class Info{
    public:
        Info(string name0,string contact0,string city0,int n):nickname{name0},contact{contact0},city{city0},n{n}{}
        void print();
    private:
        string nickname,contact,city;
        int n;
};
void Info::print()
{
    cout<<"昵称：\t"<<nickname<<endl;
    cout<<"联系方式：\t "<<contact<<endl;
    cout<<"所在城市：\t "<<city<<endl;
    cout<<"预定人数：\t "<<n<<endl;
}

 

 

 

实验任务6

textcoder.hpp

#include<iostream>
#include<string>
using namespace std;
class TextCoder{
    public:
        TextCoder(string text0):text{text0}{}
        string get_ciphertext();
        string get_deciphertext();
    private:
        string text;
        void encoder();
        void decoder();
};
void TextCoder::encoder()
{
    int l=text.length();
    int i=0;
    for(i=0;i<l;i++)
    {
        if(text.at(i)>='a'&&text.at(i)<='u')
        text.at(i)+=5;
        else if(text.at(i)>='v'&&text.at(i)<='z')
        text.at(i)-=21;
        else if(text.at(i)>='A'&&text.at(i)<='U')
        text.at(i)+=5;
        else if(text.at(i)>='V'&&text.at(i)<='Z')
        text.at(i)-=21;
    }
}
void TextCoder::decoder()
{
    int l=text.length();
    int i=0;
    for(i=0;i<l;i++)
    {
        if(text.at(i)>='f'&&text.at(i)<='z')
        text.at(i)-=5;
        else if(text.at(i)>='F'&&text.at(i)<='Z')
        text.at(i)-=5;
        else if(text.at(i)>='a'&&text.at(i)<'f')
        text.at(i)+=21;
        else if(text.at(i)>='A'&&text.at(i)<'F')
        text.at(i)+=21;
    }
}
string TextCoder::get_ciphertext()
{
    encoder();
    return text;
}
string TextCoder::get_deciphertext()
{
    decoder();
    return text;
}

task6.cpp

#include"textcoder.hpp"
#include<iostream>
#include<string>
void test()
{
    using namespace std;
    string text,encoded_text,decoded_text;
    cout<<"输入英文文本： ";
    while(getline(cin,text)){
        encoded_text=TextCoder(text).get_ciphertext();
        cout<<"加密后英文文本:\t"<<encoded_text<<endl;
        decoded_text=TextCoder(encoded_text).get_deciphertext();
        cout<<"解密后英文文本:\t"<<decoded_text<<endl;
        cout<<"\n输入英文文本："; 
    } 
}
int main()
{
    test();
}