Traditional Pointer Usage (Swap)

#include <iostream>
using namespace std;
void swap(char *ptr1, char *ptr2)
{
   char temp = *ptr1;
   *ptr1 = *ptr2;
   *ptr2 = temp;
}
int main()
{
   char a = 'y';
   char b = 'n';
   swap(&a, &b);
   cout << a << " " << b << endl;
   return 0;
}