1回答

• 

  weibo_丶本宫乏了_0

  2015-12-15 10:53:44

  public class HelloWorld{

      public static void main(String[] args) {

  int age1=24;

  int age2=18;

  int age3=36;

  int age4=27;

  int sum=age1+age2+age3+age4;

          double avg1=(age1+age2+age3+age4)/4.0;

          int minus=age1-age2;

          int newAge=--age1;

  
  

  
  

  
  

     System.out.println("年龄总和："+sum);

      System.out.println("平均年龄："+avg1);

  System.out.println("年龄差值："+minus);

  System.out.println("自减后的年龄："+newAge);

  
  

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