1回答

• 

  Absolute_Duo

  2015-05-19 22:38:40

  public class HelloWorld{
      public static void main(String[] args) {
     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);
      }
  }

  除了第一个three前要加int以外其他的three都不用加int，否则会造成重定义的错误

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