Eroare de compilare: user.cpp:3: error: ‘a’ was not declared in this scope user.cpp:3: error: ‘b’ was not declared in this scope user.cpp:3: error: initializer expression list treated as compound expression user.cpp:4: error: expected ‘,’ or ‘;’ before ‘{’ token user.cpp: In function ‘int main()’: user.cpp:11: error: ‘euc’ cannot be used as a function