编辑代码

import java.util.Scanner;

public class Main {
    public static void main(String[] args) {
        Scanner scanner = new Scanner(System.in);
        
        System.out.println("请输入实数a:");
        double a = scanner.nextDouble();
         System.out.println("请输入实数b:");
        double b = scanner.nextDouble();
        
         System.out.println("a+b=:\n");
        double sum = a + b;
        
        System.out.println(sum);
    }
}