package package2; import java.util.Scanner; public class Hello10 { public static void main(String[] args) { Scanner scanner = new Scanner(System.in); System.out.println("请输入上次的成绩:"); int lastScore = scanner.nextInt(); System.out.println("请输入这次的成绩:"); int thisScore = scanner.nextInt(); double higher = (double) (thisScore - lastScore) / (double) lastScore; System.out.printf("%.2f%%", higher * 100); } }
请问 我带了数字试 为什么提高百分比总是0.00%
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