Compilare: user.cpp: In function ‘void add(int, int)’: user.cpp:72:35: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 0; i < timp[h].size(); ++i) ^ user.cpp: In function ‘int main()’: user.cpp:97:37: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int j = 0; j < timp[i].size(); ++j) ^ user.cpp: In member function ‘char InParser::read_ch()’: user.cpp:15:38: warning: ignoring return value of ‘size_t fread(void*, size_t, size_t, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] fread(buff, 1, 4096, fin); ^