caraibe.cpp:71: warning: integer constant is too large for 'long' type caraibe.cpp: In member function 'char Reader::gChar()': caraibe.cpp:41: warning: ignoring return value of 'size_t fread(void*, size_t, size_t, FILE*)', declared with attribute warn_unused_result caraibe.cpp: In function 'int main()': caraibe.cpp:64: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result caraibe.cpp:65: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result