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Java分支结构.txt

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+1.Java分支结构之多重if
+package step3;
+
+import java.util.Scanner;
+
+public class HelloStep3 {
+	public static void main(String[] args) {
+		System.out.println("星级成绩评定系统");
+		System.out.println("请输入成绩：");
+		Scanner sc = new Scanner(System.in);
+		/******start******/
+     int score;
+        score=sc.nextInt();
+        if(score>=90&&score<=100)
+        {
+            System.out.print("*****五星成绩");
+        }
+        else if(score<90&&score>=80)
+        {
+            System.out.print("****四星成绩");
+        }
+		else if(score<80&&score>=70)
+        {
+            System.out.print("***三星成绩");
+
+        }
+		else if(score<70&&score>=60)
+        {
+            System.out.print("**俩星成绩");
+        }
+        else if(score<60)
+        {
+            System.out.print("无星成绩");
+        }
+		
+		
+		
+		
+		/******end******/
+	}
+}
+2.Java分支结构之Switch
+package step4;
+
+import java.util.Scanner;
+
+public class HelloSwitch {
+	public static void main(String[] args) {
+		Scanner sc = new Scanner(System.in);
+		
+		System.out.println("请输入月份：");
+		
+		int input = sc.nextInt();	//获取输入的月份
+		
+        //通过输入的月份来判断当前季节并输出
+		/*****start*****/
+		int season;
+        switch(input)
+        {
+            case 1:
+            System.out.print("1月是冬天");
+            break;
+            case 2:
+            System.out.print("2月是冬天");
+            break;
+            case 3:
+            System.out.print("3月是春天");
+            break;
+            case 4:
+            System.out.print("4月是春天");break;
+            case 5:
+            System.out.print("5月是春天");
+            break;
+            case 6:
+            System.out.print("6月是夏天");
+            break;
+            case 7:
+            System.out.print("7月是夏天");
+            break;
+            case 8:
+            System.out.print("8月是夏天");
+            break;
+            case 9:
+            System.out.print("9月是秋天");
+            break;
+            case 10:
+            System.out.print("10月是秋天");
+            break;
+            case 11:
+            System.out.print("11月是秋天");
+            break;
+            case 12:
+            System.out.print("12月是冬天");
+            	break;
+        }
+
+		
+		/*****end*****/
+		
+	}
+}