Eroare de compilare: user.cpp:5:13: error: variable ‘std::ifstream fin’ has initializer but incomplete type ifstream fin("cmmdc.in"); ^ user.cpp:6:14: error: variable ‘std::ifstream fout’ has initializer but incomplete type ifstream fout("cmmdc.out"); ^ user.cpp: In function ‘int main()’: user.cpp:13:8: error: ‘r’ was not declared in this scope r = a % b; ^