Eroare de compilare: user.cpp: In function ‘int gcd(int, int)’: user.cpp:10:26: error: ‘CMMDC’ was not declared in this scope return CMMDC(b, a % b); ^ user.cpp: In function ‘int main()’: user.cpp:15:5: error: ‘ifstream’ was not declared in this scope ifstream f("euclid2.in"); ^ user.cpp:15:5: note: suggested alternative: In file included from /usr/local/include/c++/4.8.0/ios:38:0, from /usr/local/include/c++/4.8.0/ostream:38, from /usr/local/include/c++/4.8.0/iostream:39, from user.cpp:2: /usr/local/include/c++/4.8.0/iosfwd:157:34: note: ‘std::ifstream’ typedef basic_ifstream<char> ifstream; ^ user.cpp:15:14: error: expected ‘;’ before ‘f’ ifstream f("euclid2.in"); ^ user.cpp:16:5: error: ‘ofstream’ was not declared in this scope ofstream g("euclid2.out"); ^ user.cpp:16:5: note: suggested alternative: In file included from /usr/local/include/c++/4.8.0/ios:38:0, from /usr/local/include/c++/4.8.0/ostream:38, from /usr/local/include/c++/4.8.0/iostream:39, from user.cpp:2: /usr/local/include/c++/4.8.0/iosfwd:160:34: note: ‘std::ofstream’ typedef basic_ofstream<char> ofstream; ^ user.cpp:16:14: error: expected ‘;’ before ‘g’ ofstream g("euclid2.out"); ^ user.cpp:18:5: error: ‘f’ was not declared in this scope f>>T; ^ user.cpp:22:9: error: ‘g’ was not declared in this scope g<<CMMDC(A, B)<<'\n'; ^ user.cpp:22:22: error: ‘CMMDC’ was not declared in this scope g<<CMMDC(A, B)<<'\n'; ^ user.cpp: In function ‘int gcd(int, int)’: user.cpp:11:1: warning: control reaches end of non-void function [-Wreturn-type] } ^