Compilare: user.cpp: In member function ‘char InParser::read_ch()’: user.cpp:21:28: 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, in); ^ user.cpp: In function ‘int main()’: user.cpp:301:75: warning: array subscript is below array bounds [-Warray-bounds] if (Number[get_root(G[get_first_elem(i)].node)] >= G[get_first_elem(i)].k) ^