java用for迴圈寫一個日曆
阿新 • • 發佈:2018-12-18
package sort; import java.util.Scanner; public class fuhuo1 { public static void main(String[] args) { Scanner in=new Scanner(System.in); System.out.println("請輸入年份"); int year=in.nextInt(); System.out.println("請輸入月份"); int month=in.nextInt(); int sum=0; for(int i=1900;i<year;i++){ if(i%4==0&&i%100!=0||i%400==0){ sum=sum+366; }else{ sum=sum+365; } } for(int i=1;i<month;i++){ if(i==2){ if(i%4==0&&i%100!=0||i%400==0){ sum=sum+29; }else{ sum=sum+28; } }else{ if(i==4||i==6||i==9||i==11){ sum=sum+30; }else{ sum=sum+31; } } } sum=sum+1; int weekday=sum%7; System.out.println("日\t一\t二\t三\t四\t五\t六"); for(int i=1;i<=weekday;i++){ System.out.print("\t"); } if(month==2){ if(year%4==0&&year%100!=0||year%400==0){ for(int i=1;i<=29;i++){ if((sum)%7==6){ System.out.print(i+"\n"); }else{ System.out.print(i+"\t"); } sum++; } }else{ for(int i=1;i<=28;i++){ if((sum)%7==6){ System.out.print(i+"\n"); }else{ System.out.print(i+"\t"); } sum++; } } }else{ if(month==4||month==6||month==9||month==11){ for(int i=1;i<=30;i++){ if((sum)%7==6){ System.out.print(i+"\n"); }else{ System.out.print(i+"\t"); } sum++; } }else{ for(int i=1;i<=31;i++){ if((sum)%7==6){ System.out.print(i+"\n"); }else{ System.out.print(i+"\t"); } sum++; } } } } }