Eroare de compilare: user.cpp:9: error: '__int64' does not name a type user.cpp: In function 'int main()': user.cpp:20: error: 'x' was not declared in this scope user.cpp:23: error: 'a' was not declared in this scope user.cpp:23: error: 'x' was not declared in this scope user.cpp:31: error: 'a' was not declared in this scope user.cpp:34: error: 'a' was not declared in this scope user.cpp:45: error: 'a' was not declared in this scope user.cpp:59: error: 'a' was not declared in this scope