Eroare de compilare: user.cpp: In function ‘int main()’: user.cpp:12:1: error: reference to ‘cin’ is ambiguous cin>>k; ^ user.cpp:4:10: note: candidates are: std::ifstream cin ifstream cin("prim.in"); ^ In file included from user.cpp:1:0: /usr/include/c++/4.8/iostream:60:18: note: std::istream std::cin extern istream cin; /// Linked to standard input ^ user.cpp:13:29: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(i = 2; i<=NMAX && cnt<k+1; ++i) ^ user.cpp:19:1: error: reference to ‘cout’ is ambiguous cout<<(i-1)*(i-1); ^ user.cpp:5:10: note: candidates are: std::ofstream cout ofstream cout("prim.out"); ^ In file included from user.cpp:1:0: /usr/include/c++/4.8/iostream:61:18: note: std::ostream std::cout extern ostream cout; /// Linked to standard output ^ user.cpp:10:23: warning: unused variable ‘n’ [-Wunused-variable] unsigned long long k, n, i; ^