Eroare de compilare: main.cpp:3:1: error: 'use' does not name a type use namespace std; ^~~ main.cpp: In function 'int main()': main.cpp:9:2: error: 'ifstream' was not declared in this scope ifstream f(adunare.in); ^~~~~~~~ main.cpp:9:2: note: suggested alternative: In file included from /usr/include/c++/6/ios:38:0, from /usr/include/c++/6/ostream:38, from /usr/include/c++/6/iostream:39, from main.cpp:1: /usr/include/c++/6/iosfwd:162:34: note: 'std::ifstream' typedef basic_ifstream<char> ifstream; ^~~~~~~~ main.cpp:10:11: error: expected ';' before 'g' ifstream g(adunare.out); ^ main.cpp:11:2: error: 'f' was not declared in this scope f >> a; ^ main.cpp:13:2: error: 'g' was not declared in this scope g << a + b; ^ Non zero exit status: 1