课堂训练书本

package book;
import java.util.Scanner;
import java.lang.*;
public class test {
public  static void main(String arg[])
{
int i,j=0;
Scanner input =new Scanner(System.in);
System.out.println("请输入购买书本数目：");
int num=input.nextInt();
int a=num%10;//表示余数
int b=num/10;//取整数
int money1=0,money2 = 0;
money1=b*2*5*8/4*3;
if(a==0)
{

money2=money1;
}
if(a==1)
{
money2=money1+8;
}
if(a==2)
{
money2=money1+2*8*95/100;
}
if(a==3)
{
money2=money1+3*8/10;
}
if(a==4)
{
money2=money1+4*8/5;
}
if(a==5)
{
money2=money1+5*8/4;
}
if(a==6)
{
money2=money1+8+5*8/4;
}
if(a==7)
{
money2=money1+3*8/10+4*8/5;
}
if(a==8)
{
money2=money1+2*4*8/5;
}
if(a==9)
{
money2=money1+4*8/5+5*8/4;

}
System.out.println("金额："+money2);

}

}