Function Pointer ! How and Why ?

[Kathir]

In C,

I have a doubt about Function pointers.

Lets say ,

typedef void (*test_audit_pr oc_t)( int *t, int index, int instnb);

typedef struct a_index
{
test_audit_proc _t test_mo_proc;
} test_audit_proc _index_t;

test_audit_proc _index_t t1[100];

Then

After filling t1[i].test_mo_proc = fn;
...



in another function
lets say

Sample 1:
void xyz()
{
test_audit_proc _t *proc;
*proc = t1[2].test_mo_proc ; -> Gives Sig 11 here

(*proc)(....... );
}

But if i give
Sample2 :
void xyz()
{
test_audit_proc _t proc;
proc = t1[2].test_mo_proc ; -> Gives Sig 11 here

(proc)(.......) ;
}
It works !!

But the same code with pointers (ie Sample 1) works for diff set of
function pointers

I just want to know how and why ???