package test;
public class hello {
public static void main(String [] argv)
{
char a1= '+' , a2='点' ,a3='进',a4='攻';
char secret ='A';
int n=2;
while(n--!=0) //此处不能光用n-- ,会提示没有Boolean匹配
{
a1 = ( char ) (a1^secret);
a2= ( char ) (a2^secret);
a3= ( char ) (a3^secret);
a4= ( char ) (a4^secret);
System.out.println("密文:"+a1+a2+a3+a4);
}
}
}