scorelevel.java

JAVA编程思想源代码 值得一下 很难找的

package chapter4;

public class ScoreLevel {

	public static void main(String[] args) {
		System.out.println("\n** first situation **");
		char grade = 'C'; // normal use
		switch (grade) {
		case 'A':
			System.out.println(grade + " is 85～100");
			break;
		case 'B':
			System.out.println(grade + " is 70～84");
			break;
		case 'C':
			System.out.println(grade + " is 60～69");
			break;
		case 'D':
			System.out.println(grade + " is ＜60");
			break;
		default:
			System.out.println("input error");
		}
		System.out.println("\n** second situation **");
		grade = 'A'; // creat error without break statement
		switch (grade) {
		case 'A':
			System.out.println(grade + " is 85～100");
		case 'B':
			System.out.println(grade + " is 70～84");
		case 'C':
			System.out.println(grade + " is 60～69");
		case 'D':
			System.out.println(grade + " is ＜60");
		default:
			System.out.println("input error");
		}
		System.out.println("\n** third situation **");
		grade = 'B'; // several case with same operation
		switch (grade) {
		case 'A':
		case 'B':
		case 'C':
			System.out.println(grade + " is ＞=60");
			break;
		case 'D':
			System.out.println(grade + " is ＜60");
			break;
		default:
			System.out.println("input error");
		}
	}
}