Explicit initialization of struct/class members

Question

struct some_struct{
    int a;
};
some_struct n = {};

n.a will be 0 after this;

I know this braces form of initialization is inherited from C a

Answer 1

The {0} is C99 apparently.

Another way to initialize in a C89 and C++ compliant way is this "trick":

struct some_struct{ int a; };

static some_struct zstruct;

some_struct n = zstruct;

This uses the fact that static variables are pre-initialized with 0'ed memory, contrary to declarations on the stack or heap.