{电文保密魔法世界电报局的电文保密的规律是将每个英文字母变成其后的第4个字母，如A变成E，a变成e。最后的4个大写字母W、X、Y、Z分别变为A、B、C、D。非字母字符不变。输入一行字符，要求输出相应的密码。}var     a: string;    i : integer;begin    readln(a);    for i:=1 to length(a) do     begin         //    writeln(ord(' '));            if( a>= 'A' )and( a[i] < 'W') then                a[i] := chr(ord(a[i]) + 4)            else if( a[i]>= 'W' )and( a[i] <= 'Z') then                a[i] := chr(ord(a[i])  + 4 -26)            else if( a>= 'a' )and( a[i] < 'w') then                a[i] := chr(ord(a[i]) + 4)            else if( a[i]>= 'w' )and( a[i] <= 'z') then                a[i] := chr(ord(a[i])  + 4 -26);    end;    writeln(a);end.