Eroare de compilare: user.cpp:2:1: error: ‘ifstream’ does not name a type ifstream fin ("adunare.in"); ^ user.cpp:3:1: error: ‘ofstream’ does not name a type ofstream fout ("adunare.out"); ^ user.cpp: In function ‘int main()’: user.cpp:9:5: error: ‘fin’ was not declared in this scope fin >> a;endl ^ user.cpp:10:5: error: expected ‘;’ before ‘fin’ fin >> b; ^ user.cpp:10:13: error: statement cannot resolve address of overloaded function fin >> b; ^ user.cpp:12:5: error: ‘fout’ was not declared in this scope fout << S; ^