Compilare: user.cpp: In function ‘int main()’: user.cpp:101:29: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (i = 0; i < root.size(); i++) { ^ user.cpp: In function ‘char getChar(FILE*)’: user.cpp:32:30: warning: ignoring return value of ‘size_t fread(void*, size_t, size_t, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] fread(in, 1, MAX_BUFF, f); ^ user.cpp: In function ‘int main()’: user.cpp:105:39: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("stramosi.out", "w", stdout); ^