9.25

public class Sum

{
  public static void main(String[] args)

  {
    System.out.println("5+5="+5+5);
  }

}

 

public class Increment
{
  public static void main(String[] args)
  {
    int a=3,b;
    b=a++;
    System.out.println("a="+a+",b="+b);
  }
}

 

public class Short
{
  public static void main(String[] args)
  {
    short s=3;
    s+=4;
    System.out.println("s="+s);
  }
}

 

public class Count
{
  public static void main(String[] args)
  {
    System.out.println(6&3);
    System.out.println(6|3);
    System.out.println(6^3);
    System.out.println(6<<3);
    System.out.println(3<<2);
    System.out.println(3>>1);
  }
}

public class Countc
{
  public static void main(String[] args)
  {
    int x=0,y;
    y=x>1?100:200;
    System.out.println("y="+y);
  }

}

import java.util.Scanner;
public class ComeputeA
{
  public static void main(String[] args)
  {
    Scanner input=new Scanner(System.in);
    System.out.print("输入两个数:");
    int a=input.nextInt();
    int b=input.nextInt();
    a=a>b?a:b;
    System.out.println(a);
  }
}

 

import java.util.Scanner;
public class ComeputeB
{
  public static void main(String[] args)
  {
    Scanner input=new Scanner(System.in);
    System.out.print("输入三个数:");
    int a=input.nextInt();
    int b=input.nextInt();
    int c=input.nextInt();
    a=a>b?a:b;
    c=a>c?a:c;
    System.out.println(c);
  }
}

import java.util.Scanner;
public class WeekDay
{
  public static void main(String[] args)
  {
    Scanner input=new Scanner(System.in);
    System.out.print("请输入一个一到七之间的数:");
    int weekday=input.nextInt();
    if(weekday==1)
    System.out.println("今天星期一");
    if(weekday==2)
    System.out.println("今天星期二");
    if(weekday==3)
    System.out.println("今天星期三");
    if(weekday==4)
    System.out.println("今天星期四");
    if(weekday==5)
    System.out.println("今天星期五");
    if(weekday==6)
    System.out.println("今天星期六");
    if(weekday==7)
    System.out.println("今天星期日");
  }
}

 

import java.util.Scanner;
public class SeasonA
{
  public static void main(String[] args)
  {
    Scanner input=new Scanner(System.in);
    System.out.println("请输入一个数:");
    int a=input.nextInt();
    switch(a)
    {
      case 1:
      case 2:
        System.out.println("冬天来了!");
        break;
      case 3:
      case 4:
      case 5:
        System.out.println("春天来了!");
        break;
      case 6:
      case 7:
      case 8:
        System.out.println("夏天来了!");
        break;
      case 9:
      case 10:
      case 11:
        System.out.println("秋天来了!");
        break;
      case 12:
        default:
        System.out.println("出错!");
      }
  }
}

 import java.util.Scanner;
public class Season
{
  public static void main(String[] args)
  {
    Scanner input=new Scanner(System.in);
    System.out.print("输入一个月份:");
    int a=input.nextInt();
    if(a>=3&&a<=5)
      System.out.println("春天来了!");
    if(a>=6&&a<=8)
      System.out.println("夏天来了!");
    if(a>=9&&a<=11)
      System.out.println("秋天来了!");
    if(a>=12&&a<=2)
      System.out.println("冬天来了!");
  }
}

import java.util.Scanner;
public class Symbol
{
  public static void main(String[] args)
  {
    Scanner input=new Scanner(System.in);
    System.out.println("请输入两个数:");
    int a=input.nextInt();
    int b=input.nextInt();
    char option='%';
    switch(option)
    {
      case '+':
        System.out.println("a+b="+(a+b));
        break;
      case '-':
        System.out.println("a-b="+(a-b));
        break;
      case '*':
        System.out.println("a*b="+(a*b));
        break;
      case '/':
        System.out.println("a/b="+(a/b));
        break;
      case '%':
        System.out.println("a%b="+(a%b));
        break;
        default:
        System.out.println("出错!");
    }
  }
}

 

public class Excise
{
public static void main(String[] args)
  {
    int x=1;
    do
     {
      System.out.println("x="+x);
      x++;
      }while(x<1);
  }

 

public class ExciseA
{
  public static void main(String[] args)
  {
    int y=1;
    while(y<3)
    {
      System.out.println("y="+y);
      y++;
    }
  }

public class ExciseB
{
  public static void main(String[] args)
   {
    for(int x=1;x<3;x++)
    {
      System.out.println("x="+x);
    }
  }
}

posted on 2017-10-23 13:04  kally1004  阅读(96)  评论(0编辑  收藏  举报

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