Giving 2D Array as Function Parameter and returning 2D Array as return type of the Function

I am trying to find transpose of 2D Matrix and want to create a function that take my 2D array and number of values of Matrix as input and return the transpose of a 2D Matrix . I have written the following code in C++

#include <iostream>
#include <string>

using namespace std;
 //int** transpose(int arr[][] , int n);
 int k=2;
 int ** transpose(int wt[1][k] , int n )
 {
    int trans[n][1];
     for(int i=0;i<n;i++)
     {
         trans[i][1] = wt[1][i];
     }
     return trans ;
 }
 int main()
 {  int n;
 cin >> n;
 int wt_vect[1][n];
  for( int i=0;i<n;i++)
  {
   wt_vect[1][i] = 0.7;
  }
int trans[n][1] = transpose(wt_vect , n);

     }

But getting error log as following

7:30: error: array bound is not an integer constant before ']' token 7:32: error: expected ')' before ',' token 7:34: error: expected unqualified-id before 'int'

Please help me to find transpose using Function . Thanks in Advance