Eroare de compilare: user.cpp:3:6: warning: ISO C++ forbids declaration of ‘main’ with no type [-Wreturn-type] main(){int a,b;z("adunare.in")>>a>>b;z("adunare.out")<<a+b;} ^ user.cpp: In function ‘int main()’: user.cpp:2:23: error: expected unqualified-id before ‘.’ token #define z std::fstream.open ^ user.cpp:3:16: note: in expansion of macro ‘z’ main(){int a,b;z("adunare.in")>>a>>b;z("adunare.out")<<a+b;} ^ user.cpp:2:23: error: expected unqualified-id before ‘.’ token #define z std::fstream.open ^ user.cpp:3:38: note: in expansion of macro ‘z’ main(){int a,b;z("adunare.in")>>a>>b;z("adunare.out")<<a+b;} ^ user.cpp:3:12: warning: unused variable ‘a’ [-Wunused-variable] main(){int a,b;z("adunare.in")>>a>>b;z("adunare.out")<<a+b;} ^ user.cpp:3:14: warning: unused variable ‘b’ [-Wunused-variable] main(){int a,b;z("adunare.in")>>a>>b;z("adunare.out")<<a+b;} ^