How to access initialized values of global variables

[Swati <swatirathi at cse dot iitb dot ac dot in>]

Hello,

I am trying to fetch the initialized values of global variables.
For eg : int i = 10;

I am able to extract the value using DECL_INITIAL.
But when I have a case like below,

struct node
{
        int x;
        int y;
};

struct node n1=
{
        99,
        88,
};

I get value as {.x=99, .y=88}

How should I iterate to fetch 99 and 88 individually?
In a way I want to access individual variables initialized values.
Can someone tell me the way to do it.

Thanks in advance.

Regards,
Swati