0326上机作业
1.输入变量x的值,如果是1,输出x=1,如果是5,输出x=5,如果是 10,输出 x=10,除了以上几个值,都输出x=none。
package first; import java.util.*; public class one { public static void main(String[] args) { // TODO Auto-generated method stub Scanner sc= new Scanner(System.in); System.out.println("请输入x的值"); int x=sc.nextInt(); if(x==1 || x==5 || x==10) { System.out.println("x="+x); }else { System.out.println("x=none"); } } }
2.用switch结构实现第1题
package first; import java.util.*; public class one { public static void main(String[] args) { // TODO Auto-generated method stub Scanner sc= new Scanner(System.in); System.out.println("请输入x的值"); int x=sc.nextInt(); switch(x) { case 1: case 5: case 10:System.out.println("x="+x);break; default:System.out.println("x=none"); } } }
3.判断一个数字是否能被5和6同时整除(打印能被5和6整除),或只能被5整除(打印能被5整 除),或只能被6整除,(打印能被6整除),不能被5或6整除,(打印不能被5或6整除)
package first; import java.util.*; public class one { public static void main(String[] args) { // TODO Auto-generated method stub Scanner sc= new Scanner(System.in); System.out.println("请输入这个数的值"); int x=sc.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 { System.out.println(x+"不能被5或6整除"); } } }
4.输入一个0~100的分数,如果不是0~100之间,打印分数无效,根据分数等级打印 A(90-100),B(80-89),C,D,E(知识点:条件语句if elseif)
package first; import java.util.*; public class one { public static void main(String[] args) { // TODO Auto-generated method stub Scanner sc= new Scanner(System.in); System.out.println("请输入分数的值"); int x=sc.nextInt(); if(x<0 || x>100) { System.out.println("打印分数无效"); }else if(x/10>=9 && x/10<=10) { System.out.println("A"); }else if(x/10>=8 & x/10<9) { System.out.println("B"); }else if(x/10>=7 & x/10<8) { System.out.println("C"); }else if(x/10>=6 & x/10<7) { System.out.println("D"); }else if(x/10<6) { System.out.println("E"); } } }
5.输入三个整数x,y,z,请把这三个数由小到大输出(知识点:条件语句)
package first; import java.util.*; public class one { public static void main(String[] args) { // TODO Auto-generated method stub Scanner sc= new Scanner(System.in); System.out.println("请输入x的值"); int x=sc.nextInt(); System.out.println("请输入y的值"); int y=sc.nextInt(); System.out.println("请输入z的值"); int z=sc.nextInt(); if(x>y && y>z) { System.out.println("输出"+z+","+y+","+x); }else if(x>z && z>y) { System.out.println("输出"+y+","+z+","+x); }else if(y>x && x>z) { System.out.println("输出"+z+","+x+","+y); }else if(y>z && z>x) { System.out.println("输出"+x+","+z+","+y); }else if(z>y && y>x) { System.out.println("输出"+x+","+y+","+z); }else if(z>x && x>y) { System.out.println("输出"+y+","+x+","+z); } } }