Eroare de compilare: user.cpp:3:1: error: ‘ifstream’ does not name a type ifstream fin("cmmdc.in"); ^~~~~~~~ user.cpp:4:1: error: ‘ofstream’ does not name a type ofstream fout("cmmdc.out") ^~~~~~~~ user.cpp: In function ‘int main()’: user.cpp:9:5: error: ‘fin’ was not declared in this scope fin>>a>>b; ^~~ user.cpp:23:9: error: ‘fout’ was not declared in this scope fout<<0; ^~~~ user.cpp:27:9: error: ‘fout’ was not declared in this scope fout<<a; ^~~~