我剛才的回答中,就是習題練習二中,if (a+b>c && a+c>b && b+c>a)它們之間應該是&&與的關系,我寫錯了,希望妳能改過來.
下面我回答妳的課後作業二的題目
import?java.util.Scanner;public?class?APP?{
public?static?void?main(String[]?args)?{ Scanner?sc?=?new?Scanner(System.in); System.out.println("樣例輸入"); int?a?=?sc.nextInt(); int?b?=?sc.nextInt(); String?c?=?sc.next(); System.out.println("樣例輸出"); switch?(c){case?"+":?System.out.println(a?+?b);break;
case?"-":?System.out.println(a?-?b);break;
case?"*":?System.out.println(a?*?b);break;
case?"/":?
if(b==0){
System.out.println("Divided?by?zero!");}else{
System.out.println(a?/?b);}
break;
default:System.out.println("Invalid?operator!");
} }}
運行結果
樣例輸入
1 2 +
樣例輸出
3