text: #ifndef SPBU_C_HOMEWORKS_LATINLOWERCASE_H
  #define SPBU_C_HOMEWORKS_LATINLOWERCASE_H
  
  #include <stdio.h>
  #include <stdlib.h>
  
  typedef struct LatinLowercaseLettersCounter LatinLowercaseLettersCounter;
  
  LatinLowercaseLettersCounter* createLatinLowercaseLettersCounter();
  void freeLatinLowercaseLettersCounter(LatinLowercaseLettersCounter* counter);
  void countLetters(LatinLowercaseLettersCounter* counter, FILE* inputStream);
  void printResult(LatinLowercaseLettersCounter* counter, FILE* outputStream);
  
  #endif // SPBU_C_HOMEWORKS_LATINLOWERCASE_H
  