实验3

实验3.5

Info.hpp

#include <iostream>
#include <string> 
#include <iomanip>
using namespace std;
class Info{
    public:
        Info(string name,string con,string where,int number):nickname{name},contact{con},city{where},n{number}{};
        void print();
        int get_n();
        
    private:
    string nickname,contact,city;
    int n;    
};
void Info::print(){
    
    cout<<"昵称:        "<<nickname<<endl;
    cout<<"联系方式:    "<<contact<<endl;
    cout<<"所在城市:    "<<city<<endl;
    cout<<"预定人数:    "<<n<<endl;
    cout<<endl;
}

int Info::get_n(){
    return n; 
}

task5.cpp

#include <iostream>
#include "Info.hpp"
#include <vector>
#include <string>
#include <iomanip>
int main(){
    using namespace std;    
    const int capacity=100;
    vector<Info> audience_info_list;
    cout<<"录入信息：\n\n";
    cout<<"昵称"<<setw(35)<<"联系方式（邮箱/手机号）"<<setw(20)<<"所在城市"<<setw(25)<<"预定参加人数\n";
    int sum=0,number,item=0,left=0;
    string name,con,where;
    while(sum<=capacity&&getline(cin,name,' ')){
        cin>>con;
        cin>>where;
        cin>>number;
        getchar();
        Info push(name,con,where,number);
        left=push.get_n();
        audience_info_list.push_back(push);
        item++;
        sum+=number;
        number=0;
    }
    if(sum>capacity){
        cout<<"对不起，只剩"<<capacity-sum+left<<"个位置\n";
        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：";
        char choose;
        cin>>choose;
        cout<<endl; 
        cout<<"截至目前，一共有"<<sum-left<<"位听众预定参加。预定听众信息如下："<<endl; 
        for(int i=0;i<item-1;i++){    
            audience_info_list.at(i).print();
        }
    }    
    else{
        cout<<"截至目前，一共有"<<sum<<"位听众预定参加。预定听众信息如下："<<endl; 
        for(int i=0;i<item;i++){
            audience_info_list.at(i).print();
        }
    }
}

实验3.6

textcoder.hpp

#include <iostream>
#include <string>
using namespace std; 
class TextCoder{
    public:
    TextCoder(string tx);
    string get_ciphertext();
    string get_deciphertext();
    void ciphertext();
    void deciphertext();
    private:
    string text;
    
};
TextCoder::TextCoder(string tx){
    text=tx;
} 
void TextCoder::ciphertext(){
    for(int i=0;i<=text.size();i++){
        if(text[i]>=65&&text[i]<=85){
            text[i]+=5;
        }
        else if(text[i]>=97&&text[i]<=117){
            text[i]+=5;
        }
        else if(text[i]>=86&&text[i]<=90){
            text[i]-=11;
        }
        else if(text[i]>=118&&text[i]<=122){
                text[i]-=11;
        }
    }
    
}
void TextCoder::deciphertext(){
    for(int i=0;i<=text.size();i++){
        if(text[i]>=70&&text[i]<=90){
            text[i]-=5;
        }
        else if(text[i]>=102&&text[i]<=122){
            text[i]-=5;
        }
        else if(text[i]>=65&&text[i]<=69){
            text[i]-=11;
        }
        else if(text[i]>=97&&text[i]<=101){
                text[i]-=11;
        }
    }

}
string TextCoder::get_ciphertext(){
    this->ciphertext();
    return text;
}
string TextCoder::get_deciphertext(){
    this->deciphertext();
    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();
}