Java作业五（2017-10-15） 

　　/*3-2.程序员：龚猛
　　　　第三章全部例题*/
 1 package zhenshu;
 2 import java.util.Scanner;
 3 public class practise {
 4 
 5     public static void main(String[] args) {
 6         int number1 = (int)(Math.random() * 10);
 7         int number2 = (int)(Math.random() * 10);
 8         
 9         if(number1 < number2) {
10             int temp = number1;
11             number1 = number2;
12             number2 = temp;
13         }
14         System.out.print
15         ("what is" + number1 + "-" + number2 +"?");
16         Scanner input = new Scanner(System.in);
17         int answer = input.nextInt();
18         
19         if (number1 - number2 == answer)
20             System.out.println("You are correct!");
21         else{
22             System.out.println("Your answer is wrong.");
23             System.out.println(number1 + "-" + number2 + "should be" + (number1 - number2 ));
24         }
25     }
26 
27 }
　/*3-3.*/　
 1 package zhenshu;
 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("Enter an integer:");
 8         int number = input.nextInt();
 9         
10         if (number % 5 ==0)
11             System.out.println("HiFive");
12         
13         if (number % 2 ==0)
14             System.out.println("HiEven");
15 
16     }
17 
18 }
  /*3-3*/
 1 package zhenshu;
 2 import java.util.Scanner;
 3 public class bmi {
 4 
 5     private static final char[] Obese = null;
 6 
 7     public static void main(String[] args) {
 8         Scanner input = new Scanner(System.in);
 9         
10         System.out.print("Enter height in pounds:");
11         double weight = input.nextDouble();
12         
13         System.out.print("Enter height in inches:");
14         double height = input.nextDouble();
15         
16         final double KILOGRAMS_PER_POUND = 0.45359237;
17         final double METERS_PER_INCH = 0.0254;
18         
19         double weightInKilograms = weight * KILOGRAMS_PER_POUND;
20         double heightInMeters = height * METERS_PER_INCH;
21         double bmi = weightInKilograms / (heightInMeters * heightInMeters);
22         
23         System.out.println("BMI is" + bmi);
24         if (bmi < 18.5)
25             System.out.println("Underweight");
26         else if (bmi < 25)
27             System.out.println("Normal");
28         else if (bmi < 30)
29             System.out.println("overweight");
30         else
31             System.out.println(Obese);
32         
33         
34     }
35 
36 }

 

 

posted @ 2017-10-15 20:37  So.cool  阅读(236)  评论(0)    收藏  举报