#include <iostream>

using namespace std;

int countX (const char *p, const char *x) {
  if (p==nullptr) {
    return 0;
  }

  int count = 0;

  for (; *p != 0; p++) {
    if (*p == *x) {
      count++;
    }
  }
  return count;
}

int main (void) {
  cout << countX("Haaay, Koray", "a") << endl;

  return 0;
}