Eroare de compilare: user.cpp:4:12: error: variable ‘std::fstream fin’ has initializer but incomplete type fstream fin("exp.in",ios::in),fout("exp.out",ios::out); ^ user.cpp:4:22: error: incomplete type ‘std::ios {aka std::basic_ios<char>}’ used in nested name specifier fstream fin("exp.in",ios::in),fout("exp.out",ios::out); ^ user.cpp:4:35: error: variable ‘std::fstream fout’ has initializer but incomplete type fstream fin("exp.in",ios::in),fout("exp.out",ios::out); ^ user.cpp:4:46: error: incomplete type ‘std::ios {aka std::basic_ios<char>}’ used in nested name specifier fstream fin("exp.in",ios::in),fout("exp.out",ios::out); ^ user.cpp: In function ‘int main()’: user.cpp:17:20: warning: left operand of comma operator has no effect [-Wunused-value] fin>>("%d %d",&m,&n); ^ user.cpp:17:23: warning: right operand of comma operator has no effect [-Wunused-value] fin>>("%d %d",&m,&n); ^ user.cpp:20:21: warning: left operand of comma operator has no effect [-Wunused-value] fin>>("%d",&x); ^ user.cpp:38:32: warning: left operand of comma operator has no effect [-Wunused-value] fout<<("%d %d\n",prim[i],pt[i]/m); ^ user.cpp:38:32: warning: right operand of comma operator has no effect [-Wunused-value]