精品文档---下载后可任意编辑#include#include#includeusing namespace std;ifstream in("密码学.txt");void JiaMi(char ZhiHuan[]); //加密函数void JieMi(char ZhiHuan[]); //解密函数void setZhiHuan(char ZhiHuan[],char fanZhiHuanBiao[]); //设置置换表函数int main(){int m; // 确定是加密或解密加密为 1，解密为 2char ZhiHuanBiao['z'+1]; // 正向置换表，加密时用char fanZhiHuanBiao['Z'+1]; //反向置换表，解密时用cout<<"加密按输入 1，解密输入 2"<>m; //读入 msetZhiHuan(ZhiHuanBiao, fanZhiHuanBiao); //设置置换表switch(m) //推断 m 值，执行相应的功能{case 1: JiaMi(ZhiHuanBiao);break;case 2: JieMi(fanZhiHuanBiao);break;default:break;}return 0;}精品文档---下载后可任意编辑void JiaMi(char ZhiHuan[]) //加密{string MingWen; //保存明文cout<='a' && MingWen[i]<='z')cout<='A' && MiWen[i]<='Z')cout<= 'A' && s[i] <='Z'){for(int j = 0; j < ();j++){if(s[i] == s1[j]){sign = 1;break;}}if(sign == 0) s1 = s1 + s[i];else sign = 0;}精品文档---下载后可任意编辑}for( j ='a';j<='z';j++)cout<
