three=one+two;有什么用?
public class HelloWorld{
public static void main(String[] args) {
int one = 10 ;
int two = 20 ;
int three = 0 ;
System.out.println("three+=one==>"+40);
System.out.println("three-=one==>"+30);
System.out.println("three*=one==>"+300);
同样可以输出
three+=one==>40
three-=one==>30
three*=one==>300
