Java語言程式設計(基礎篇)第十版 4.15
阿新 • • 發佈:2018-12-13
public class J4_15 { public static void main(String[] args) { // TODO Auto-generated method stub java.util.Scanner input = new java.util.Scanner(System.in); System.out.print("Enter a letter"); String letter = input.nextLine(); switch(letter.toUpperCase()) { case " ": System.out.println("The corresponding number is 0 ");break; case "'": System.out.println("The corresponding number is 1");break; case "A": case "B": case "C": System.out.println("The corresponding number is 2");break; case "D": case "E": case "F": System.out.println("The corresponding number is 3");break; case "G": case "H": case "I": System.out.println("The corresponding number is 4");break; case "J": case "K": case "L": System.out.println("The corresponding number is 5");break; case "M": case "N": case "O": System.out.println("The corresponding number is 6");break; case "P": case "Q": case "R": case "S": System.out.println("The corresponding number is 7");break; case "T": case "U": case "V": System.out.println("The corresponding number is 8");break; case "W": case "X": case "Y": case "Z": System.out.println("The corresponding number is 9");break; default:System.out.println(letter+" is an invalid input");break; } } }