实验2 数组、指针与c++标准库

task5

task5.cpp源码

#include"info.cpp"
#include<vector>

using namespace std;

int main(){
    vector<Info> audience_info_list;
    string name1,contact1,city1;
    const int capacity=100;
    int n1,judge,k,change,count=0;
    cout<<"录入信息：(决定输入信息前需输入当前序号，停止录入即输入0)"<<endl;
    cout<<"称呼/昵称，联系方式（邮箱/手机号），所在城市，预定参加人数"<<endl;
    while(cin>>judge){
        if(judge==0){
            cout<<"截至目前，一共有"<<count<<"位听众预定参加。预定听众信息如下"<<endl;
            for(k=0;k<audience_info_list.size();k++) audience_info_list[k].print();
            break;
        }
        cin>>name1>>contact1>>city1>>n1;
        Info user(name1,contact1,city1,n1);
        audience_info_list.push_back(user);
        count+=n1;
        if(count>capacity){
        char choice;
        count=capacity-count+n1;
        cout<<"对不起，只剩"<<count<<"个位置"<<endl;
        cout<<"1.输入u,更新(update)预定位置"<<endl;
        cout<<"2.输入q,退出预定"<<endl;
        cin>>choice;
        switch(choice){
            case 'u': {
                cout<<"现预定情况:"<<endl;
                cout<<"截至目前，一共有"<<100-count<<"位听众预定参加。预定听众信息如下"<<endl;
                audience_info_list.pop_back();
                for(k=0;k<audience_info_list.size();k++) audience_info_list[k].print();
                change=1;
                count=100-count;
                cout<<"可选择继续录入信息"<<endl;
                break;
            }
            case 'q': {
                cout<<"截至目前，一共有"<<100-count<<"位听众预定参加。预定听众信息如下"<<endl;
                audience_info_list.pop_back();
                for(k=0;k<audience_info_list.size();k++) audience_info_list[k].print();
                change=0;
                break;
            }
    }
    }
     if(change==0) break;
    }
}

info.cpp源码

#include<iostream>
#include<string>


using namespace std;

class Info{
private:
    string name;
    string contact;
    string city;
    int n;
public:
    Info(string name0,string contact0,string city0,int n0):name(name0),contact(contact0),city(city0),n(n0){}
    void print(){
        cout<<"称呼:         ";
        cout<<name<<endl;
        cout<<"联系方式:     ";
        cout<<contact<<endl;
        cout<<"所在城市:     ";
        cout<<city<<endl;
        cout<<"预定人数:     ";
        cout<<n<<endl;
        cout<<"\n";
    }
};

实验结果截图：

task6

task6.cpp源码：

#include<iostream>
#include<string>
#include<ctype.h>

using namespace std;

class TextCoder{
private:
    string text;
public:
    TextCoder(string text0):text(text0){}
    TextCoder(const TextCoder &a){
        text=a.text;
    }
    string encoder(){
        int i;
        for(i=0;i<text.length();i++){
            if(text[i]=='v'||text[i]=='V'){
                switch(text[i]){
                    case 'v' : text[i]='a';break;
                    case 'V' : text[i]='A';break;
                }
            }
            else if(text[i]=='w'||text[i]=='W'){
                switch(text[i]){
                    case 'w' : text[i]='b';break;
                    case 'W' : text[i]='B';break;
                }
            }
            else if(text[i]=='x'||text[i]=='X'){
                switch(text[i]){
                    case 'x' : text[i]='c';break;
                    case 'X' : text[i]='C';break;
                }
            }
            else if(text[i]=='y'||text[i]=='Y'){
                switch(text[i]){
                    case 'y' : text[i]='d';break;
                    case 'Y' : text[i]='D';break;
                }
            }
            else if(text[i]=='z'||text[i]=='Z'){
                switch(text[i]){
                    case 'z' : text[i]='e';break;
                    case 'Z' : text[i]='E';break;
                }
            }
            else{
                if(isalpha(text[i])) text[i]=text[i]+5;
        }
        }
        return text;
    }
    string decoder(){
        int i;
        for(i=0;i<text.length();i++){
            if(text[i]=='a'||text[i]=='A'){
                switch(text[i]){
                    case 'a' : text[i]='v';break;
                    case 'A' : text[i]='V';break;
                }
            }
            else if(text[i]=='b'||text[i]=='B'){
                switch(text[i]){
                    case 'b' : text[i]='w';break;
                    case 'B' : text[i]='W';break;
                }
            }
            else if(text[i]=='c'||text[i]=='C'){
                switch(text[i]){
                    case 'c' : text[i]='x';break;
                    case 'C' : text[i]='X';break;
                }
            }
            else if(text[i]=='d'||text[i]=='D'){
                switch(text[i]){
                    case 'd' : text[i]='y';break;
                    case 'D' : text[i]='Y';break;
                }
            }
            else if(text[i]=='e'||text[i]=='E'){
                switch(text[i]){
                    case 'e' : text[i]='z';break;
                    case 'E' : text[i]='Z';break;
                }
            }
            else{
                if(isalpha(text[i])) text[i]=text[i]-5;
        }
       }
        return text;
    }
};

实验结果截图：