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Afu

#1 Created at ... [Delete] [Delete and Lock User] 
Scanner scanner = new Scanner(System.in);System.out.println("请输入上次考试成绩：");float lastScore = scanner.nextFloat();System.out.println("请输入本次考试成绩：");float thisScore = scanner.nextFloat();//提升分数float increaseScore = thisScore - lastScore;System.out.printf("成绩提升了%.2f分，提升了%.2f%%", increaseScore, increaseScore * 100.0 / lastScore);

Afu

#2 Created at ... [Delete] [Delete and Lock User]

格式化下

Scanner scanner = new Scanner(System.in);
System.out.println("请输入上次考试成绩：");
float lastScore = scanner.nextFloat();
System.out.println("请输入本次考试成绩：");
float thisScore = scanner.nextFloat();
//提升分数
float increaseScore = thisScore - lastScore;
System.out.printf("成绩提升了%.2f分，提升了%.2f%%", increaseScore, increaseScore * 100.0 / lastScore);
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