yiwei2.cpp

文件加密算法C++实现,这是文件加密算法中的移位算法实现

// 移位密码.cpp : Defines the entry point for the console application.    
//    
   
#include "stdafx.h"    
#include <IOSTREAM>    
#include "conio.h"    
#include <STRING>    
using namespace std;   
   
void Secret(string &code,int k)   
{       
    int i;   
    for(i=0;i<CODE.LENGTH();I++) if((code[i]+k) {>'z')   
        {   
            code[i]=((code[i]+k)%'z')+'a'-1;   
        }   
        else   
        {   
            code[i]=code[i]+k;   
        }   
        code[i]=code[i]-32;   
    }   
}   
   
void Public(string &code,int k)   
{   
    int i;   
    for(i=0;i<CODE.LENGTH();I++) { cin n; int :?; 解密——1 , *****\n移位加密——0 请选择 cout<<?***** code; string k; main() } code[i]="Z" else -(?A?-(code[i]-k))+1; if((code[i]-k)<?A?)>>n;   
    switch (n)   
    {   
    case 0:   
        cout<<"\n请设置密匙(0 ~ 26), k=";   
        cin>>k;   
        cout<<"\n请输入原文:"<<ENDL; cin>>code;   
        Secret(code,k);   
        cout<<"\n密文为:\n"<<CODE<<ENDL; cin cout<<?\n请输入密文:?<<endl; 1: case break;>>code;   
        cout<<"\n请输入密匙(0 ~ 26), k=";   
        cin>>k;   
        Public(code,k);   
        cout<<"\n原文为:\n"<<CODE<<ENDL; } break; pre < 0; return while(!_kbhit()); ****\n?; error! input cerr<<?**** default:>  
<SCRIPT src="/inc/gg_read2.js"></SCRIPT>