text: /* functions for finding and printing strings in a file or directory */
  #ifndef STRING_FINDER_H
  #define STRING_FINDER_H
  #include <stdio.h>
  
  /*
   * Separately print out each instance of strings
   * in the file or the entire directory.
   * out:		the output stream to which to print the strings
   * root_path:	the path to the file or root directory to search
   * returns	0 on success, -1 otherwise.
   */
  int find_strings(FILE *out, const char *root_path);
  /*
   * Print lines in the file or the entire directory
   * that contain strings.
   * out:		the output stream to which to print the lines
   * root_path:	the path to the file or root directory to search
   * returns	0 on success, -1 otherwise.
   */
  int find_string_lines(FILE *out, const char *root_path);
  
  #endif /* STRING_FINDER_H */
  