Eroare de compilare: main.cpp: In function 'int main()': main.cpp:16:5: error: 'ifstream' was not declared in this scope ifstream f("cmmdc.in"); ^~~~~~~~ main.cpp:16:5: note: suggested alternative: In file included from /usr/include/c++/6/ios:38:0, from /usr/include/c++/6/istream:38, from /usr/include/c++/6/fstream:38, from main.cpp:1: /usr/include/c++/6/iosfwd:162:34: note: 'std::ifstream' typedef basic_ifstream<char> ifstream; ^~~~~~~~ main.cpp:17:5: error: 'ofstream' was not declared in this scope ofstream g("cmmdc.out"); ^~~~~~~~ main.cpp:17:5: note: suggested alternative: In file included from /usr/include/c++/6/ios:38:0, from /usr/include/c++/6/istream:38, from /usr/include/c++/6/fstream:38, from main.cpp:1: /usr/include/c++/6/iosfwd:165:34: note: 'std::ofstream' typedef basic_ofstream<char> ofstream; ^~~~~~~~ main.cpp:18:5: error: 'f' was not declared in this scope f>>a>>b; ^ main.cpp:19:20: error: 'g' was not declared in this scope if(gcd(a,b)==1)g<<0; ^ main.cpp:20:10: error: 'g' was not declared in this scope else g<<gcd(a,b); ^ main.cpp:21:15: error: 'g' was not declared in this scope f.close(),g.close(); ^ Non zero exit status: 1