import javax.swing.JOptionPane;

//2.4

/*public class LQ

{

public static void main(String []args)

{

String s=JOptionPane.showInputDialog("请输入磅数");

double i=Double.parseDouble(s);

i=i*0.454;

JOptionPane.showMessageDialog(null,i);

}

}*/

//2.5

/*

public class LQ

{

public static void main(String []args)

{

String s=JOptionPane.showInputDialog("请输入费用");

double i=Double.parseDouble(s);

String s1=JOptionPane.showInputDialog("请输入提成率(%)");

double i1=Double.parseDouble(s1);

JOptionPane.showMessageDialog(null,"提成费为："+i*i1*0.01+"\t总费用为："+(i+i*i1*0.01));

}

}*/

//2.6

/*

public class LQ

{

public static void main(String []args)

{

String s=JOptionPane.showInputDialog("请输入0~1000之间的一个整数");

int i=Integer.parseInt(s);

int sum=i%10;

for(i=i/10;i/10!=0;)

{

sum+=i%10;

i=i/10;

}

sum+=i%10;

JOptionPane.showMessageDialog(null,"各数位相加为："+sum);

}

}*/

//2.7

/*

public class LQ

{

public static void main(String[]args)

{

char i1='A';

JOptionPane.showMessageDialog(null,(char) ((int)'a'-(int)'A'+i1));

}

}*/

//2.8

/*

public class LQ

{

public static void main(String[]args)

{

String s=JOptionPane.showInputDialog("请输入一个在0~127之间的整数");

int i=Integer.parseInt(s);

JOptionPane.showMessageDialog(null,(char)i);

}

}*/

//2.9

/*

public class LQ

{

public static void main(String[]args)

{

String s1=JOptionPane.showInputDialog("请输入资金额");

String s2=JOptionPane.showInputDialog("请输入年利率(%)");

String s3=JOptionPane.showInputDialog("请输入年数");

double i1=Double.parseDouble(s1);

double i2=Double.parseDouble(s2);

double i3=Double.parseDouble(s3);

JOptionPane.showMessageDialog(null,i1*Math.pow((1+i2*0.01),12*i3));

}

}*/

//2.10

/*

public class LQ

{

public static void main(String[]args)

{

String s=JOptionPane.showInputDialog("请输入整数");

double i=Double.parseDouble(s);

int i1=(int)i;

int j=i1%100;

JOptionPane.showMessageDialog(null,i1/100+"美元"+j+"美分");

}

}*/

//2.11

/*

import java.util.Scanner;

public class LQ

{

public static void main(String []args)

{

Scanner sc=new Scanner(System.in);

System.out.println("Enter an amount in double,for example 11.56");

double amount=sc.nextDouble();

int remainingAmount=(int)(amount*100);

int numberOfOneDollars=remainingAmount/100;

remainingAmount=remainingAmount%100;

int numberOfQuarters=remainingAmount/25;

remainingAmount=remainingAmount%25;

int numberOfDimes=remainingAmount/10;

remainingAmount=remainingAmount%10;

int numberOfNickels=rem