c++ error: variable of field <functionName> declared void

[Angelica Furio]

Im doing a quicksort overload function for bool, char, long.. etc. but once I compile it, it says the error mentioned in the main function. It runs perfectly when it's not overloaded. here's the code:

main.cpp

void sortArray(charArray, 0, size-1);
void sortArray(boolArray, 0, size-1);
void sortArray(intArray, 0, size-1);
void sortArray(longArray, 0, size-1);
void sortArray(floatArray, 0, size-1);
void sortArray(doubleArray, 0, size-1);

sort.cpp

void printArr(int* arr, int n);
int splitArr(int* arr, int pivot, int start, int end);
void sortArray(int* arr, int start, int end);
void swap(int &a, int &b);

void printArr(int* arr, int n)
{
    int i;
     
    for( i = 0; i < n; i++) cout<<arr[i]<<'\t';


    cout << endl;
}


void sortArray(int* arr, int start, int end)
{
    int pivot = arr[start];                    
    int splitPoint;
    
    if(end > start)                         
                                                      
                                                      
    {
        splitPoint = SplitArray(arr, pivot, start, end);
                                                      
        arr[splitPoint] = pivot;
        sortArray(arr, start, splitPoint-1);   
        sortArray(arr, splitPoint+1, end);     
    }
}


int splitArr(int* arr, int pivot, int start, int end)
{
    int leftBoundary = start;
    int rightBoundary = end;
    
    while(leftBoundary < rightBoundary)               
    {
         while( pivot < arr[rightBoundary]          
                && rightBoundary > leftBoundary)      
         {
              rightBoundary--;                        
         }
         swap(arr[leftBoundary], arr[rightBoundary]);
         
         while( pivot >= arr[leftBoundary]          
                && leftBoundary < rightBoundary)      
         {
              leftBoundary++;                         
         }
         swap(arr[rightBoundary], arr[leftBoundary]);
    }
    return leftBoundary;                              
                                                      
}



void swap(int &a, int &b)
{
    int temp;
    temp = a;
    a = b;
    b = temp;
}

[Elysia]

void sortArray(charArray, 0, size-1);
void sortArray(boolArray, 0, size-1);
void sortArray(intArray, 0, size-1);
void sortArray(longArray, 0, size-1);
void sortArray(floatArray, 0, size-1);
void sortArray(doubleArray, 0, size-1);

Is this supposed to call the function or declare function prototypes? If it's supposed to call the function, then remove the "void." You don't specify return type when calling functions.
You might also want to look at templates later. It allows a function to take an arbitrary type, and so you can collapse all your functions into one (I'm assuming you have several).