此小程序为N栏栅加密算法程序的一种，对输入的明文进行N栏栅加密，此时必须确定N.rar

//学校：武汉理工大学 //qq号：297416605 //姓名：万艳良 #include<iostream.h> void main() { char exit; cout<<"Do you want to exit?(y or n)"<<endl; cin>>exit; while(exit!='y'||exit=='n') { char a[50],b; int e=0,i=0,m,n,N; //加密 cout<<"please input the Key N:"<<endl; cin>>N; cout<<"Please input the P-text(ended with the letter @):"<<endl; cin>>b; a[i]=b; i++; while(b!='@') { cin>>b; if(b=='@') a[i]=' '; else a[i]=b; i++; } i--; //输出密文 cout<<"the C-text is:"<<endl; for(n=0;n<=N-1;n++) { for(m=n;m<=i-1;m+=N) { cout<<a[m]<<""; } } cout<<endl; cout<<"Do you want to exit?(y or n)"<<endl; cin>>exit; } }