Trouble resizing array

[crodriguez08]

Hey there, I'm having trouble with my ResizeArray function, I don't know if there's something wrong inside the function itself, or simply the location of the function is misplaced. So any help would be appreciated. The array size is supposed to increase depending if the amount of numbers in the file is bigger than the array, which the default is 15. When I try to run the program as it is right now, the program simply stops running after it displays the numbers in the file.

Here's most of the program:

# include <iostream>
# include <fstream>
# include <string>
# include <cstdlib>

using namespace std;

// Prototypes

void Instrucciones(void);
bool CheckFile(string filename);
int ReadFile();
float *ResizeArray(float [], int, int);
bool InsertElement(float [], int &, ifstream &);
void SelectionSort(float [], int);


int main(){
  // Declaring variables
  int opcion;  
  string filename;
  int size;
  int defaultsize = 15;
  float array[15];
  bool verify;
  string nombreArchivo;
  string prepend("sorted-");
        
  // Display instructions
  Instrucciones();
                   
     cout << "Enter the name of the file: " << endl;
     cin >> filename;
     
     if (CheckFile(filename)==true){
        ifstream ListNumbers;
        size = 0;
        int numbers;
     
        ListNumbers.open(filename.c_str(),fstream::in);   
        while (!ListNumbers.eof()){
              verify = InsertElement(array, size, ListNumbers);
              
        }
        
        cout << "The amount of numbers in the file is: " << size << endl;
        
        if (verify == true){
           ResizeArray(array, size, defaultsize);
        }
        
        cout << "The file " << filename << " exists. " << endl;
        
        ListNumbers.clear();
        ListNumbers.close();
        
        nombreArchivo = prepend + filename;
        ofstream SortedFile(nombreArchivo.c_str());
        
        SelectionSort(array, size);
        for (int i = 0; i < size; i++)
              SortedFile << array[i] << endl;
     }
     else {
         cout << "The file doesn't exist." << endl;
     }
     
     system("pause");
} // End main

float *ResizeArray(float array[], int size, int defaultsize){
      float *arrayptr;
      int resize;
      
      resize = size + defaultsize;
      arrayptr = new float[resize];
      
      for (int i = 0; i < size; i++){
          arrayptr[i] = array[i];
      }    
      
      delete [] array;
      
      array = arrayptr;
          
      return arrayptr;
}
      
bool InsertElement(float array[], int & size, ifstream & ListNumbers){
     float numbers;
     
     ListNumbers >> numbers;
     if (ListNumbers){
        array[size] = numbers;
        cout << "The numbers are: " << array[size] << endl;
        size++;
     }
     
     if (size >= 15)
        return true;
     else
        return false; 
}

Thanks for any help.

[unoriginal]

You cannot delete[] a C style array. Use the STL if you must to resize C++ style arrays.

Change your declaration of float array[15] to float *array = new float [15].
That way, your ResizeArray function shall be able to use delete[] on array.

You could use valarrays instead: http://www.cplusplus.com/reference/std/valarray/valarray/resize/