Character Problem

int count(char input_filename[]);
void load_file(char input_filename[], int things[], int array_size);
void display(int things[], int array_size);
void bubble_sort(int things[], int array_size);
void pause(void);

char     data_filename[] = "C:\Data\Letters.txt";

//******************************************************
// main
//******************************************************

int main(void)
{
int record_count = count_file_values(data_filename);
int acres[record_count];
load_file(data_filename, acres, record_count);
cout << "The letters are: \n";
display(acres, record_count);
bubble_sort(acres, record_count);
cout << "\n\nThe sorted letters are: \n";
display_array(acres, record_count);
pause();

return 0;
}

int count_file_values(char input_filename[])
{
fstream inData;         
double next_value;
char     number_of_values = 0;

inData.open(input_filename, ios::in);     
if (!inData)
    {
    cout << "\n\nError opening input data file: " << input_filename << "\n\n";
    pause();
    exit(EXIT_FAILURE);
    }
// Get data values and count them

while (inData >> next_value)
    {
    number_of_values++;
    }

// Close the files
inData.close();                             

return number_of_values;
}

void load_file(char input_filename[], int things[], int array_size)
{
fstream inData;         

inData.open(input_filename, ios::in);     
if (!inData)
    {
    cout << "\n\nError opening input data file: " << input_filename << "\n\n";
    pause();
    exit(EXIT_FAILURE);
    }
else
    {
    for (int i = 0; i < array_size; i++) 
     {
     inData >> things[i];
     }
    inData.close();
    }
return;
}


void display(int things[], int array_size)
{
for (char i = 0; i < array_size; i++)
    {
    cout << things [i] << " " ;
    }


return;
}

void bubble_sort(int things[], int array_size)
{
bool moresortneeded; 
int temp;         

do
    {
    moresortneeded = false;
    for(int i = 0; i < array_size - 1; i++)
     {
     if(things[i] > things[i+1])
        {
        temp = things[i];
        things[i] = things[i+1];
        things[i+1] = temp;
        moresortneeded = true;
        }
     }
    }
while(moresortneeded);

return;
}

void pause(void)
{
cout << "\n\n";
system("PAUSE");
cout << "\n\n";
return;
}