homework day20141014

public class test01 {
      public static void main(String[] args) {
        System.out.println("老师好，我是J111班肖文骏！");
  }
}

public class test02 {
  public static void main(String[] args) {
    long c=30;// 万公里/秒
    int h=8;// 分钟
    System.out.printf("太阳光距离地球的距离：%d米",c*1000*10000*h*60);
  }
}

import java.util.Scanner;


public class test03 {
  public static void main(String[] args) {
    double a;
    double b;
    Scanner AA=new Scanner(System.in);
      System.out.print("请输入a值");
      a=AA.nextDouble();
      System.out.print("请输入b值");
      b=AA.nextDouble();
    System.out.printf("%f+%f=%.2f\n",a,b,a+b);
    System.out.printf("%f-%f=%.2f\n",a,b,a-b);
    System.out.printf("%f*%f=%.2f\n",a,b,a*b);
    System.out.printf("%f/%f=%.2f\n",a,b,a/b);
    System.out.print("计算结束");
    AA.close();
}
}

import java.util.Scanner;


public class test04 {
  public static void main(String[] args) {
    Scanner cs=new Scanner(System.in);
    System.out.print("请输入你的姓名：");
    String name=cs.nextLine();
    System.out.printf("欢迎你,"+name+"!");
    cs.close();
  }
}

import java.util.Scanner;


public class test05 {
  public static void main(String[] args) {
	double a;
	Scanner cc=new Scanner(System.in);
	System.out.print("请输入要换算的厘米：");
	a=cc.nextDouble();
	System.out.printf("换算结果：%f英寸",a/0.3937);
  }
}