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作业

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import java.util.Scanner;

public class Grade{

public static void main(String[] args){

Scanner scanner=new Scanner(System.in);

System.out.println("请输入上次考试成绩:");

double l=scanner.nextInt();

System.out.println("请输入本次考试成绩:");

double t=scanner.nextInt();

double i=(t/l-1)*100;

System.out.printf("你的成绩提高了: %.2f%%",i);

}

}


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