Java third week of work

1. Enter a year, it is determined is not a leap year (but not divisible by four divisible by 100, or divisible by 400)

 1 package tset;
 2 import java.util.Scanner;
 3 public class demo {
 4 
 5     public static void main(String[] args) {
 6         Scanner input = new Scanner(System.in);
 7         System.out.println("请输入年份：");
 8         int a = input.nextInt();
 9         if (a % 4 == 0 && a % 100 != 0 || a % 400 ==0) {
10             System.out.println("是闰年");
11         } else {
12             System.out.println ( "not a leap year" );
 13 is          }
 14          // the TODO Auto-Generated Method Stub 
15  
16      }
 . 17  
18 is }

2. Enter a 4-digit card number, if one hundred number is a multiple of three, then the output is fortunate members, otherwise it is not output.

. 1  Package Tset;
 2  Import java.util.Scanner;
 . 3  public  class Demo {
 . 4      public  static  void main (String [] args) {
 . 5           Scanner INPUT = new new Scanner (the System.in);
 . 6           System.out.println ( "Please four input membership number: " );
 . 7           int A = input.nextInt ();
 . 8           IF ((A% 1000/100)%. 3 == 0 ) {
 . 9               System.out.println (" lucky member " );
 10               } the else {
 . 11                 System.out.println ( "not lucky member" );
 12 is               }
 13 is          // the TODO Auto-Generated Method Stub 
14  
15      }
 16  
. 17 }

3. The value of the function is known, the value of the input x, output y of the corresponding.
X. 3 + (x> 0)
y = 0 (x = 0)
X2 -1 (x <0)

. 1  Package Tset;
 2  Import java.util.Scanner;
 . 3  public  class Demo {
 . 4      public  static  void main (String [] args) {
 . 5          Scanner INPUT = new new Scanner (the System.in);
 . 6          System.out.println ( "Please the input value x (integer): " );
 . 7          int x = input.nextInt ();
 . 8          int Y;
 . 9          IF (x> 0 ) {
 10              Y = x +. 3 ;
 . 11              System.out.println (" Y is values are: "+ Y);
 12 is         } The else  IF (X == 0 ) {
 13 is              System.out.println ( "value of y is: 0" );
 14          } the else  IF (X <0 ) {
 15              y = X * X -. 1 ;
 16              the System.out .println ( "value of y is:" + y);
 . 17          } 
 18 is  
. 19      }
 20 is  
21 is }

4. Enter the number of three, determines whether a triangular configuration (the sum of any two sides is greater than the third side)

. 1  Package Tset;
 2  Import java.util.Scanner;
 . 3  public  class Demo {
 . 4      public  static  void main (String [] args) {
 . 5           Scanner INPUT = new new Scanner (the System.in);
 . 6              System.out.println ( "Please three sides of the triangle input (integer): " );
 . 7              int a = input.nextInt ();      
 . 8              int B = input.nextInt ();
 . 9              int C = input.nextInt ();
 10              int D = a + B;  
 11              int= A + E C;
 12 is              int F = B + C;
 13 is              IF (D> C && E> F && B> A) {
 14                  System.out.println ( "can form a triangle" );
 15              } the else {
 16                  the System .out.println ( "not constitute a triangle" );            
 17              }            
 18      }
 19 }

Java third week of work

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