Recursive BubbleSort for Array of Characters

#include<stdio.h>
/*
* Implemented by Arjun Sunel.
*/

// Method to swap two characters by reference.
void Swap(char *first, char *second)
{
 char temp = *first;
 *first = *second;
 *second = temp;
}

// Bubble Sort Method
void BubbleSort(char array[], int size, int swapped)
{
    if(swapped == 0 || size == 0)
    {
        return;
    }
    
 int i;
 for(i = 0; i < size - 1; i++)
 {
  swapped = 0;
 
  if( array[i] > array[i + 1] )
  {
   Swap(&array[i], &array[i + 1]);
   swapped = 1;
  }
 }
 
    BubbleSort(array, size-1, swapped);
}

// Entry point of the program
int main()
{
 char array[] = {'d', 'a', 'c', 'b'};
 int arraySize = 4;
 int index;
  
 printf("Before sorting : \n");
 for(index = 0; index <= arraySize - 1; index++)
 {
  printf("%c ", array[index]);
 } 
 
 int swapped = 1;
 
 BubbleSort(array, arraySize, swapped);

 printf("\nAfter sorting : \n");
 for(index = 0; index <= arraySize - 1; index++)
 {
  printf("%c ", array[index]);
 } 

 printf("\n");
}