还是不知道哪里出了问题
int one = 10 ;
int two = 20 ;
int three = 0 ;
three=one+two;
System.out.println(＂three=one+two==>＂+three);
three+=one;
System.out.println(＂three+=one==>＂+three);
three-=one;
System.out.println(＂three-=one==>＂+three);
three*=one;
System.out.println(＂three*=one==>＂+three);
three/=one;
System.out.println(＂three/=one==>＂+three);
three%=one;
System.out.println(＂three%=one==>＂+three);
