Eroare de compilare: user.cpp:4:1: error: ‘ifstream’ does not name a type ifstream cin("cifra.in"); ^~~~~~~~ user.cpp:5:1: error: ‘ofstream’ does not name a type ofstream cout("cifra.out"); ^~~~~~~~ user.cpp: In function ‘int main()’: user.cpp:12:5: error: ‘cin’ was not declared in this scope cin >> T; ^~~ user.cpp:25:9: error: ‘cout’ was not declared in this scope cout << (difference[number / 20] + lastDigitOfS20[number % 20]) % 10 << "\n"; ^~~~