1. package com.itheima08; import java.util.Scanner; public class HelloBudget { public static void main(String[] args ){ Scanner input=new Scanner(System.in); System.out.print("请输入x的取值:"); int x=input.nextInt(); if(x==1){System.out.println(x); } else if (x==5){System.out.println(x); } else if (x==10){System.out.println(x); }else {System.out.println("none"); } } } 2.package com.itheima08; import java.util.Scanner; public class HelloBudget { public static void main(String[] args ){ Scanner input=new Scanner(System.in); System.out.print("请输入x的取值:"); int x=input.nextInt(); switch(x){ case 1: System.out.println("1"); break; case 5: System.out.println("5"); break; case 10: System.out.println("10"); break; default: System.out.println("none"); break; } } } 3.package com.itheima08; import java.util.Scanner; public class HelloBudget { public static void main(String[] args ){ Scanner input =new Scanner(System.in); System.out.print(" please import a number:"); int i = input.nextInt(); if(i%5==0&&i%6==0){ System.out.println(i+"能够被5和6同时整除"); }else if(i%5==0&&i%6!=0){ System.out.println(i+"只能够被5整除"); }else if(i%6==0&&i%5!=0){ System.out.println(i+"只能够被6整除"); }else if(i%6!=0&&i%5!=0){ System.out.println(i+"不能够被5和6整除"); } } } 4.package com.itheima08; import java.util.Scanner; public class HelloBudget { public static void main(String[] args ){ Scanner input=new Scanner(System.in); System.out.print("请输入一个0~100之间的整数:"); int x=input.nextInt(); String grade=""; if(x>=90&&x<=100){ grade="A"; } else if(x>=80&&x<=89){ grade="B"; } else if(x>=70&&x<=79){ grade="C"; } else if(x>=60&&x<=69){ grade="D"; } else if(x>=0&&x<=59){ grade="E"; } else { grade="false"; } System.out.println(grade); } 5. package com.itheima08; import java.util.Scanner; public class HelloBudget { public static void main(String[] args ){ Scanner input=new Scanner(System.in); System.out.print("请输入第一个数:"); int a=input.nextInt(); System.out.println(); System.out.print("请输入第二个数:"); int b=input.nextInt(); System.out.println(); System.out.print("请输入第三个数:"); int c=input.nextInt(); System.out.println(); if(a>b&&b>c){ System.out.println(c+"<"+b+"<"+a); } else if(a>c&&c>b){ System.out.println(b+"<"+c+"<"+a);} else if(b>a&&a>c){ System.out.println(c+"<"+a+"<"+b); } else if(c>a&&a>b){ System.out.println(b+"<"+a+"<"+c); } else if(b>c&&c>a){ System.out.println(a+"<"+c+"<"+b); } else if(c>b&&b>a){ System.out.println(a+"<"+b+"<"+c); } } }
1.编写程序, 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。(知识点:if条件语句)
2.用switch结构实现第1题
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)
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)
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)