int three=one+two; int three+=one; int three-=one; int three*=one; int three/one; int three%=one; System.out.println(three); } }
int声明关键字，不能每句都用吧。
int one = 10 ;
int two = 20;
int three = 0 ;
int as=one+two;
int sw=two+two;
int dw=two+two-one;
int ad=(one+two)*one;
int asd=(ad/30)+two;
int sc=(one+two)%(one+two);
System.out.println("three=one+two==>"+as);
System.out.println("three+=one==>"+sw);
System.out.println("three-=one==>"+dw);
System.out.println("three*=one==>"+ad);
System.out.println("three/=one==>"+asd);
System.out.println("three%=one==>"+sc);
int three+=one; 不存在多吧3怎么会等于3+1