实验2 数组、指针与C++标准库

Info.hpp

#ifndef INFO_HPP
#define INFO_HPP
#include <iostream>
#include <string>
using namespace std;

class info {
private:
	string nickname, contact, city;
	int n;
public:
	info(string nickname0, string contact0, string city0, int n0);
	void print()const;
};
info::info(string nickname0, string contact0, string city0, int n0) :nickname(nickname0), contact(contact0), city(city0), n(n0) {
}
void info::print()const {
	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>

int main()
{
	using namespace std;
	vector<info> audience_info_list;
	const int capacity = 100;
	int num = 0, i = 0;
	string NICKNAME, CONTACT, CITY;
	int N;
	cout << "录入信息： " << endl;
	cout << 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 >> NICKNAME >> CONTACT >> CITY >> N) {
		num += N;
		if (num > capacity) {
			num -= N;
			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： ";
			char Choose;
			cin >> Choose;
			while (Choose != 'q' && Choose != 'u')
			{
				cout << "输入错误，请重新输入：";
				cin >> Choose;
			}
			if (Choose == 'q')
			{
				break;
			}
			if (Choose == 'u')
			{
				continue;
			}
		}
		else {
			info audience(NICKNAME, CONTACT, CITY, N);
			audience_info_list.push_back(audience);
		}
	}
	cout << endl;
	cout << "截至目前，一共有" << num << "位听众预定参加。预定听众信息如下：" << endl;
	for (auto audience_info : audience_info_list) {
		audience_info.print();
	}

}

　　

 

 

 textcoder.hpp

#ifndef TEXTCODER_HPP
#define TEXTCODER_HPP
#include <iostream>
#include <string>

using namespace std;
class TextCoder{
private:
	string text;
public:
	TextCoder(string text0 = nullptr) :text(text0) {
	}
	string encoder();
	string decoder();
};

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



#endif

　　task6.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: ";
    }
}