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;

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