Compilare: user.cpp: In function ‘int main()’: user.cpp:33:36: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(i=0; i<a[q[prim]].size(); i++) ^ user.cpp:12:17: warning: variable ‘fout’ set but not used [-Wunused-but-set-variable] FILE *fin, *fout; ^