java第四次作业
1. package ketangzuoye;
import java.util.Scanner;
public class Text1 {
/**
* @param args
*/
public static void main(String[] args) {
// TODO Auto-generated method stub
System.out.println("输入一个年份");
Scanner input=new Scanner(System.in);
int x=input.nextInt();
if(x%4==0&&x%100!=0){
System.out.println("是润年");
}
else{
System.out.println("不是闰年");
}
}
}
2.
package ketangzuoye;
import java.util.Scanner;
import java.util.Random;
public class text {
/**
* @param args
*/
public static void main(String[] args) {
// TODO Auto-generated method stub
Scanner input=new Scanner(System.in);
System.out.println("输入会员卡号");
int x=input.nextInt();
int c=x/10%10;
Random d=new Random();
int f=d.nextInt(10);
if(c==f){
System.out.println("您是幸运会员");
}
else{
System.out.println("您不是幸运会员");
}
}
}
3.
package ketangzuoye;
import java.util.Scanner;
public class zuoye3 {
/**
* @param args
*/
public static void main(String[] args) {
// TODO Auto-generated method stub
System.out.println("输入一个函数");
Scanner input=new Scanner(System.in);
int x=input.nextInt();
int y;
if(x>0){
y=x+3;
System.out.println(y);
}
if(x==0){
y=0;
System.out.println(y);
}
if(x<0){
y=x*2-1;
System.out.println(y);
}
4.
package ketangzuoye;
import java.util.Scanner;
public class ktzy4 {
/**
* @param args
*/
public static void main(String[] args) {
// TODO Auto-generated method stub
System.out.println("输入三个数");
Scanner input=new Scanner(System.in);
int a=input.nextInt();
int b=input.nextInt();
int c=input.nextInt();
if(a+b>c&&a+c>b&&b+c>a){
System.out.println("能构成三角形");
}
else{
System.out.println("不能够成三角形");
}
}
}
5. package ketangzuoye;
import java.util.Scanner;
public class zuoye1 {
/**
* @param args
*/
public static void main(String[] args) {
// TODO Auto-generated method stub
System.out.println("输入年份，月份");
Scanner input=new Scanner(System.in);
int year=input.nextInt();
int month=input.nextInt();
int day = 0;
switch(month){
case 1:
case 3:
case 5:
case 7:
case 8:
case 10:
case 12:
day=31;
System.out.println("该月是"+month+"该月有"+day);
break;
case 2:if(year%4==0&&year%100!=0||year%400==0){
day=29;
}
else{
day=28;
}
System.out.println("该月是"+month+"该月有"+day);
break;
case 4:
case 6:
case 9:
case 11:
day=30;
System.out.println("该月是"+month+"该月有"+day);
6. package ketangzuoye;
import java.util.Scanner;
public class zy2 {
/**
* @param args
*/
public static void main(String[] args) {
// TODO Auto-generated method stub
Scanner input=new Scanner(System.in);
int a=input.nextInt();
a=a/10;
switch(a){
case 10:
case 9:
System.out.println("成绩为A");
break;
case 8:
System.out.println("成绩是B");
break;
case 7:
System.out.println("成绩是C");
break;
case 6:
System.out.println("成绩是D");
break;
case 5:
case 4:
case 3:
case 2:
case 1:
case 0:
System.out.println("不及格");
}
}
}
8.
package ketangzuoye;
import java.util.Scanner;
public class zy3 {
/**
* @param args
*/
public static void main(String[] args) {
// TODO Auto-generated method stub
Scanner input=new Scanner(System.in);
int a=input.nextInt();
if(a%2==0){
System.out.println("是偶数");
}
else{
System.out.println("是奇数");
}
}
9.
package zuoye4;
import java.util.Scanner;
public class xzy8 {
//自己写的
/**
* @param args
*/
public static void main(String[] args) {
// TODO Auto-generated method stub
Scanner input=new Scanner(System.in);
System.out.println("输入一个数");
int x=input.nextInt();
switch(x){
case 1:System.out.println("x=1");
case 5:System.out.println("x=5");
case 10:System.out.println("x=10");
default :System.out.println("x=nome");
}
}
}
10.
package zuoye4;
import java.util.Scanner;
public class xzy9 {
/**
* @param args
*/
public static void main(String[] args) {
// TODO Auto-generated method stub
Scanner input=new Scanner(System.in);
System.out.println("输入一个数");
int a=input.nextInt();
if(a%5==0&&a%6==0){
System.out.println("可以被5和6整除");
}else if(a%5==0){
System.out.println("可以被5整除");
}
else if(a%6==0){
System.out.println("可以 被6整除");
}
else{
System.out.println("不能被整除");
}
}
}
