流程控制习题.docx

1.利用巢狀判定敘(if)述判定閏年.1.1請先畫出決策圖.提示:定義一個Data Type為int的變數theyear.先判定可否被4整除再判定可否被4和100整除再判定可否被4和100和400整除1.2寫出程式2.利用判定敘述(switch)判定季節.2.1請先畫出決策圖.提示:定義一個Data Type為int的變數month.month為1,2,3時是春天month為4,5,6時是夏天month為7,8,9時是秋天month為10,11,12時是冬天3.算出1到99偶數的總合3.1 用for3.2 用while4.印出九九乘法表結果要如下圖1X1=1 2X1=2 3X1=3 .1X2=2 2X2=4 3x2=6 .5.運用輾轉相除法求最大公因數提示:兩數相除得一餘數餘數為0,則找到最大公因數如果餘數不為零,則將分母變分子,餘數變分母,直到相除餘數為0 1.public class Year public static void main(String args) / TODO Auto-generated method stubwhile(12)SuppressWarnings(resource)Scanner sc = new Scanner(System.in); System.out.println(Please input the year:);int theyear =sc.nextInt();if(theyear%4 = 0)System.out.println(theyear + 是闰年);else if(theyear%100 = 0)System.out.println(theyear + 是闰年);else if(theyear%400 = 0)System.out.println(theyear + 是闰年);else System.out.println(theyear + 不是闰年);2. package sea;import java.util.Scanner;public class Season public static void main(String args) / TODO Auto-generated method stubwhile(12)SuppressWarnings(resource)Scanner sc = new Scanner(System.in); System.out.println(请输入月份:);int month =sc.nextInt();switch(month)case 1:case 2:case 3:System.out.println(month + 月是春天);break;case 4:case 5:case 6:System.out.println(month + 月是夏天);break;case 7:case 8:case 9:System.out.println(month + 月是秋天);break;case 10:case 11:case 12:System.out.println(month + 月是冬天);break;default:System.out.println(请重新输入！);3.1package sum;public class Sum public static void main(String args) / TODO Auto-generated method stubint esum = 0;for(int i = 0;i 99;i += 2)esum = esum + i;System.out.println(esum);3.2package sum;public class Sumw public static void main(String args) / TODO Auto-generated method stubint esum = 0;int i =0;while(i 99)esum = esum + i;i = i+2;System.out.println(esum);4.package table;public class Table public static void main(String args) / TODO Auto-generated method stubfor(int i=1;i=9;i+)for(int j=1;j=9;j+)System.out.print(+j+*+i+=+(j*i)+t);System.out.println();5.package factor;import java.util.Scanner;public class Factor public static void main(String args) / TODO Auto-generated method stubwhile(12)System.out.println(请输入两个数：);Scanner s = new Scanner(System.in); int x = s.nextInt();int y = s.nextInt();System.out.println(最大公