1.11

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace _1._1
{
    class Program
    {
        static void Main(string[] args)
        {
            int i;
            string s_text, s_key, s_result="";
            char ch;                                                //定义变量
            Console.WriteLine("请输入原字符串");
            s_text = Console.ReadLine();                            //输入s_text 
            Console.WriteLine("请输入秘钥字符串");
            s_key = Console.ReadLine();                              //输入s_key
            if (s_text.Length != s_key.Length)                       //判断长度是否相等
                Console.WriteLine("秘钥字符串与原字符串长度必须相等");
            else
            {
                for (i = 0; i < s_text.Length; i++)                  //使用for语句及异或运算符 ^ 进行加密
                {
                    ch = s_text[i];
                    s_result += (char)(ch ^ s_key[i]);
                }
                Console.WriteLine("加密后字符串为：");
                Console.WriteLine(s_result);                          //输出加密后的结果
                Console.WriteLine("按回车键结束");
                Console.ReadLine();
            }
        }
    }
}