array initialisation

Question

I\'m quite certain that arrays of built in types are unitialized, whereas arrays of UDTs are default initialized.

int foo[5]; // will contain junk
Foo foo

Answer 1

"Members of arrays and structures are default initialized or not depending on whether the array or structure is static"

This is authoritative, although it could be clearer:

• Arrays and structures declared as static are initialized to zeroes.
• Local arrays and structures of built-in types (i.e. types that have no constructors) are not initialized.