#include<iostream>
#include<string>
using namespace std;
void main()
{
int k1,k2,i;
string s;
char cry[30];
cout<<"                            信息安全密碼轉換程序   "<<endl;
cout<<"                                      04計師本4   0408008439   許劍波"<<endl;
cout<<"          輸入參數的值："<<endl;
cout<<"          k1(為整型)=";
cin>>k1;
cout<<"          k2(為整型)=";
cin>>k2;
cout<<"請輸入原文："<<endl;
cin>>s;
for(i=0;i<s.length();i++)
cry[i]=((s[i]-97)*k1+k2)%26+97;
cout<<" 密文為:\n";
for(int k=0;k<s.length();k++)
cout<<cry[k];
cout<<endl;
cin>>i;
}