通过2-D阵列功能给出奇怪的错误

您好我想创建一个功能，但它给误差

Hi I am trying to create a function, but it gives error

  [Error] cannot convert 'float (*)[(((sizetype)(((ssizetype)n) + -1)) + 1)]' to 'float (*)[30]' for argument '1' to 'float vecino_mas_cercano(float (*)[30])'

我的code是：

My code is:

#include <iostream>
#include<stdio.h>
#include <fstream>
#include<stdlib.h>
using namespace std;

int n1=30;

float nearest_neighbor(float distances[30][30])
{  float min=distances[0][1];
   int candidates[n1];
   int city=0;

   for (int i=0;i<n1;i++)
   {  candidates[i]=i;
   }

   for (int i=0;i<n1;i++)
   {  for (int &j:candidates)
      {  if (j!=0)
            if (distances[city][j]<min);
            {  min=distances[i][j];
               candidates[i]=0;
               city=j;
            }
      }
   }
   return min;
}

int main()
{
   //Declaración de variables

   int n=30; //número de nodos o cityes


   FILE *d;
   float distance[n][n];
   d =fopen("Oli30.csv","r");//r abrir el archivo que contiene las distances para leerlo

   for(int i=0 ;i<n; i++) //en la matriz distance se guardan los valores de las distances
   {  for(int j=0; j<n; j++)
      {  fscanf(d,"%f",&distance[i][j]);}
   }

   float tau_initial;

   tau_initial=nearest_neighbor(distance);  
   cout << "The result is " << tau_initial;
   return 0;

}

我想这个问题是因为距离设置为指针，我不知道如何传递函数nearest_neighbor这种说法。

I suppose the problem is because distance is set as a pointer, I dont know how to pass this argument in function nearest_neighbor.

有人可以解释我如何使这个工作？

Can somebody explain me how to make this works??

感谢您