How are local and global variables initialized by default?

Question

Based on below, am i right?

• global_A reference is initialized to null.
• global_int is 0
• local_A reference is null
• local_int is uninit

Answer 1

Just for the sake of completeness if you had references:

References must be initialized on declaration, otherwise you get punished by a compiler error. This means a reference always needs another value or reference it refers to (like the says), this is ensured by the compiler so you cannot forget it. This also implies that references can never be null pointers. However the object they refer to might become invalid.