text: #include <stdio.h>
  #include <string.h>
  
  int f_calls = 0;
  
  int fib(int n)
  {
      f_calls = f_calls + 1;
      if (n == 1 || n == 2)
          return 1;
  
      return fib(n-1) + fib(n-2);
  }
  
  int main(void)
  {
      int n;
      char s[3];
  
      scanf("%d", &n);
  
      if (n == 1)
          strcpy(s, "st");
      else if (n == 2)
          strcpy(s, "nd");
      else if (n == 3)
          strcpy(s, "rd");
      else 
          strcpy(s, "th");
  
      printf("%d%s fibonacci number is %d\n", n, s, fib(n));
      printf("Number of function calls: %d\n", f_calls);
  
      return 0;
  }