Scanner scanner = new Scanner(System.in);
System.out.println("請輸入學生成績");
int a = scanner.nextInt();
String grade = (a >= 90) ? "A" : (a >= 60 && a < 90) ? "B" : "C";
System.out.println(grade);
Scanner scanner = new Scanner(System.in);
System.out.println("請輸入學生成績");
int a = scanner.nextInt();
String grade = (a >= 90) ? "A" : (a >= 60 && a < 90) ? "B" : "C";
System.out.println(grade);
轉載於:https://www.cnblogs.com/gxqq/p/5335230.htmlhtml