第四周上机练习

package task1;
import java.util.*;
public class q {
     public static void main(String[] args) {
            Scanner input = new Scanner(System.in);
            System.out.println("请输入x的值：");
            int x = input.nextInt();
            if (x == 1) {
                System.out.println("x=1");
            } else if(x == 5) {
                System.out.println("x=5");
            } else if(x == 10) {
                System.out.println("x=10");
            } else {
                System.out.println("x=none");
            }
        }
}

package task1;
import java.util.*;
public class q {
    public static void main(String[] args) {
        Scanner input=new Scanner(System.in);
          System.out.println("请输入一个数:");
          int x =input.nextInt();
          switch(x){
          case 1:
           System.out.println("x=1");
           break;
          case 5:
           System.out.println("x=5");
           break;
          case 10:
           System.out.println("x=10"); 
           break;
          default:
           System.out.println("none");
           break; 
          }
        }
}

package task1;
import java.util.*;
public class q {
    public static void main(String[] args) {
        Scanner input=new Scanner(System.in);
        System.out.println("请输入一个数");
        int x=input.nextInt();
        if(x%5==0&&x%6==0)
            System.out.println("x能被5和6整除");
        else if(x%5==0)
            System.out.println("x能被5整除");
        else if(x%6==0)
            System.out.println("x能被6整除");
        else if(x%6!=0||x%5!=0)
            System.out.println("x不能被5或6整除");
        }
}

package task1;
import java.util.*;
public class q {
    public static void main(String[] args) { 
        Scanner input=new Scanner(System.in);
        System.out.println("请输入一个0-100的分数");
        int x=input.nextInt();
        if(x>=90&&x<=100)
            System.out.println("A");
        else if(x>=80&&x<=90)
            System.out.println("B");
        else if(x>=70&&x<=80)
            System.out.println("C");
        else if(x>=60&&x<=70)
            System.out.println("D");
        else if(x>=50&&x<=60)
            System.out.println("E");
        else if(x<0||x>100)
            System.out.println("值不和法分数无效");
        }
}

package task1;
import java.util.*;
public class q {
    public static void main(String[] args) { 
        Scanner input=new Scanner(System.in);
        System.out.println("请输入3个数");
        int x=input.nextInt();
        int y=input.nextInt();
        int z=input.nextInt();
        if(x>y&&y>z)
            System.out.println("从大到小"+x +y +z);
        else if(y>x&&x>z)
            System.out.println("从大到小"+y +x +z);
        else if(z>x&&x>y)
            System.out.println("从大到小"+z +x +y);
        else if (x>z&&z>y)
        System.out.println("从大到小"+x +z +y);
        else if(y>z&&z>x)
            System.out.println("从大到小"+y +z +x);
        else if(z>y&&y>x)
            System.out.println("从大到小"+z +y +x);
        }
}