我无法运行它，我不知道为什么? [英] i cant run it i dont know why?

问题描述

package sum;
import java.util.Scanner;
public class Main {

  
    public static void main(String[] args) {
     Scanner input = new Scanner(System.in);
     int a;
     int n  ;
     System.out.println("enter an integer :");
     a = input.nextInt();

     System.out.println("enter an integer :");
     n= input.nextInt();
       	System.out.println(sum(a,n));
    }
  public static  double sum(int n,double []a)
{
    if(n ==0)
        return n;
  return sum(a,n-1)+a[n-1];

}

    private static double sum(double[] a, int i) {
        throw new UnsupportedOperationException("Not yet implemented");
    }

    }

程序在一行中有错误(System.out.println(sum(a，n));)??
非常抱歉，我不知道如何使用Main.sum(a，n)调用sum并将其写为业余爱好者
谢谢:玫瑰:

the programe have an error in the line (System.out.println(sum(a,n));)??
I really sorry i dont know how i must call sum using Main.sum(a, n) and write it i am amateur
thanks:rose:

推荐答案

您的课程中没有sum(int i1, int i2)方法.

Did你读过我以前的答案吗?您有两个sum()重载，但是您的调用与两个重载都不匹配，因此编译器将拒绝它.

Did you read my previous answer? You have two overloads of sum() and yet your call does not match either of them, so the compiler will reject it.

mf_arian写道:

mf_arian wrote:

System.out.println(sum(a，n));

System.out.println(sum(a,n));

我认为最好使用
调用sum Main.sum(a，n)

还要确保签名正确匹配.我可以看到签名是不同的.

;)

I think it is better to call sum using
Main.sum(a, n)

Also make sure the signature matches properly. I can see the signature is different.

;)

这篇关于我无法运行它，我不知道为什么?的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！