java程序设计教程(第六版)课后习题答案

pp2.3 public class fudian { public static void main(String[] args) { float a=2.10f,b=3.70f; float Result1,Result2,Result3; Result1=a+b; Result2=a-b; Result3=a*b; System.out.println("Result1 is:"+Result1); System.out.println("Result2 is:"+Result2); System.out.println("Result3 is:"+Result3); } } 2.4 public class TempConverter { public static void main(String[] args) { final int BASE = 32; final double CONVERSION_FACTOR = 5.0 / 9.0; double celsiusTemp; int fahrenheitTemp = 70; // value to convert celsiusTemp = (fahrenheitTemp - BASE)*CONVERSION_FACTOR; System.out.println ("Fahrenheit Equivalent: " + fahrenheitTemp); System.out.println ("Celsius Temperature: " + celsiusTemp); } } 2.5 public class yinglizhuanqianmi { public static void main(String[] args) { float Base=1.60935f; float Qianmi; float Yingli=19.85f; Qianmi=Yingli*Base; System.out.println ("Ying Li: " + Yingli); System.out.println ("Qian Mi: " +Qianmi); } } 2.6 public class TimeConverter1 { public static void main(String[] args) { int Hour=5,Minute=35,Second=51; int SECONDS; SECONDS=Hour*60*60+Minute*60+Second; System.out.println (+Hour+"时"+Minute+"分"+Second+"秒"); System.out.println ("换算成秒: " + SECONDS); } } 2.7 public class TimeConverter2 { public static void main(String[] args) { int SECONDS=10853; int Hour,Minute,Second; Second=SECONDS%60; Minute=(SECONDS-Second)%60; Hour=(SECONDS-Second-Minute*60)/3600; System.out.println (SECONDS+"秒，转化为"); System.out.println (Hour+"时"+Minute+"分"+Second+"秒"); } } 2.9 import java.util.*; public class Dollarbill { public static void main(String[] args) { float Dollar1,Dollar2; int Ten,Five,One,Quarters,Dimes,Nickles,Pennies; Scanner reader=new Scanner(System.in); System.out.println("输入币值："); Dollar1=reader.nextFloat(); Dollar2=Dollar1*100; Pennies= (int)Dollar2%5; Nickles...