java14章上机练习_Java经典习题14 /*
题⽬：输⼊某年某⽉某⽇，判断这⼀天是这⼀年的第⼏天？
*/
import java.util.*;
public class Class14 {
public static void main(String[] args) {
System.out.println("请输⼊年:");
Scanner sc = new Scanner(System.in);
int year = sc.nextInt();
System.out.println("请输⼊⽉:");
Scanner sc1 = new Scanner(System.in);
int month = Int();
System.out.println("请输⼊⽇:");
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Scanner sc2 = new Scanner(System.in);
int day = Int();
java经典上机编程题
int count = 0;
boolean index;
int days = 0;
if((year < 0) || (month < 0) || (month > 12) || (day < 0) || (day > 31)){
index = false;
System.out.println("输⼊有误请重新输⼊。");
}else{钩小蝴蝶视频教程
index = true;
}
if(index == true){
slider汉堡for(int i = 1; i < month; i++){
switch(i){
case 1:
case 3:
case 5:
case 7:
case 8:
case 10:
case 12:
days = 31;
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break;
case 4:
case 6:
case 9:
case 11:element旗舰店
days = 30;
break;
case 2:
if((year % 400 == 0) || ((year % 4 == 0) && (year % 100 != 0))){ days = 29;
}else{
days = 28;
}
break;
}
count += days;
}
}
System.out.println(count + day);
}
}

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