实验3 数组、指针与现代C++标准库

实验任务5:

info.hpp:

#include<iostream>
#include<string>
using namespace std;
class info{
public:
    info(string ni,string co,string ci,int n);
    void print();
private:
    string nickname,contact,city;
    int n_people;
};
info::info(string ni,string co,string ci,int n):nickname{ni},contact{co},city{ci},n_people{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_people<<endl;
}

task5.cpp:

#include"info.hpp"
#include<iostream>
#include<vector>
#include<string>
using namespace std; 
const int capacity = 100;
int n;string ni,co,ci,ch;
int main(){
    int capacityplus=0,j=0;
    vector<info>audience_info_list;
    cout<<"录入信息：\n\n"<<"昵称      "
    <<"联系方式（邮箱/手机号码）      "<<"所在城市      "
    <<"预定参加人数      \n";
    while(cin>>ni&&ni!="end"){
        cin>>co>>ci>>n;
        capacityplus+=n;
        if(capacity>capacityplus)
            audience_info_list.push_back(info(ni,co,ci,n));
        else{
            capacityplus-=n;
            cout<<"对不起，只剩"<<capacity-capacityplus<<"个位置。\n";
            cout<<"1.输入u，更新（update）预定信息\n";
            cout<<"2.输入q，退出预定\n"<<"你的选择：";
            cin>>ch;
            if(ch=="q")
                return 0;
            if(ch=="u"){
                cout<<"录入信息：\n\n"<<"昵称      "
                <<"联系方式（邮箱/手机号码）      "<<"所在城市      "
                <<"预定参加人数      \n";
            }                    
        }
    }
    cout << "截至目前，一共有" <<capacityplus<< "位听众预定参加。预定听众信息如下：\n";
        while(j<audience_info_list.size()){
            audience_info_list[j].print();
            cout<<"\n";
            j++;
        }    
}

运行结果：

实验任务6

textcoder.hpp:

#include<iostream>
#include<string>
#include <cctype>
using namespace std;
class  TextCoder{
public:
    TextCoder(string t);
    string get_ciphertext();
    string get_deciphertext();
private:
    string text;
    void encoder();
    void decoder();
};

TextCoder::TextCoder(string t):text{t}{}

string TextCoder::get_ciphertext(){
    encoder();
    return text;
}

string TextCoder::get_deciphertext(){
    decoder();
    return text;
}

void TextCoder::encoder(){
    for(auto &obj:text){
        if(obj>='a'&&obj<='u'||obj>='A'&&obj<='U')
            obj+=5;
        else if('u'<obj&&obj<='z'||'U'<obj&&obj<='Z')
            obj-=21;
    }
}

void TextCoder::decoder(){
    for(auto &obj:text){
        if('f'<=obj&&obj<='z'||'F'<=obj&&obj<='Z')
            obj-=5;
        else if(obj>='a'&&obj<'f'||obj>='A'&&obj<'F')
            obj+=21;
    }
}

task 6:

#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)&&text!="^z") {
        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(); 
}

运行结果：