三栏栅加密算法.rar

//学校：武汉理工大学 //qq号：297416605 //姓名：万艳良 #include<iostream.h> void main() { char a[50],b; int i=0,m,n,o; //加密 cout<<"Please input the P-text(ended with the letter z):"<<endl; cin>>b; a[i]=b; i++; while(b!='z') { cin>>b; if(b=='z') a[i]=' '; else a[i]=b; i++; } i--; //输出密文 cout<<"the C-text is:"<<endl; for(m=0;m<=i-1;m+=3) { cout<<a[m]<<""; } for(n=1;n<=i-1;n+=3) { cout<<a[n]<<""; } for(o=2;o<=i-1;o+=3) { cout<<a[o]<<""; } cout<<endl; }