import java.util.Scanner;
public class Test {
public static void main(String[] args) {
var scanner = new Scanner(System.in);
System.out.print("请输上次考试成绩:");
float test1 = scanner.nextFloat();
System.out.print("请输本次考试成绩:");
float test2 = scanner.nextFloat();
float m = (test2 - test1) / test1 * 100;
/*百分比不保留小数
System.out.printf("你的成绩提升百分比为:%.0f%%", m);
*/
//百分比保留两位小数
System.out.printf("你的成绩提升百分比为:%.2f%%", m);
}
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就是想卖萌
import java.util.Scanner;
public class Test {
public static void main(String[] args) {
var scanner = new Scanner(System.in);
System.out.print("请输上次考试成绩:");
float test1 = scanner.nextFloat();
System.out.print("请输本次考试成绩:");
float test2 = scanner.nextFloat();
float m = (test2 - test1) / test1 * 100;
/*百分比不保留小数
System.out.printf("你的成绩提升百分比为:%.0f%%", m);
*/
//百分比保留两位小数
System.out.printf("你的成绩提升百分比为:%.2f%%", m);
}
}