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哩

#1 Created at ... [Delete] [Delete and Lock User] 
import  java.util.Scanner;public class Demo1 {    public static void main(String[] args) {        Scanner scanner = new Scanner(System.in);        System.out.println("Input your grade1:");        double i = scanner.nextDouble();        System.out.println("Input your grade2:");        double j = scanner.nextDouble();        System.out.printf("Your grade percent is:%.2f%%",i/j*100);    }}

两个百分号一起打就能输出百分号了

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