Eroare de compilare: user.cpp:2:1: error: ‘ifstream’ does not name a type ifstream fin("sum.in"); ^ user.cpp:3:1: error: ‘ofstream’ does not name a type ofstream fout("sum.out"); ^ user.cpp: In function ‘int main()’: user.cpp:23:2: error: ‘fin’ was not declared in this scope fin >> t; ^ user.cpp:28:4: error: ‘fout’ was not declared in this scope fout << solutie <<"\n";} ^