c - Unexpected output on initializing array by using both "Element-by-Element" & "Designated" techniques together -

c99 provides feature initialize arrays using both element-by-element & designated method as:

int a[] = {2,1,[3] = 5,[5] = 9,6,[8] = 4}; 

on running code:

#include <stdio.h>  int main() {    int a[] = {2,1,[3] = 5,[0] = 9,4,[6] = 25};    for(int = 0; < sizeof(a)/sizeof(a[0]); i++)           printf("%d    ",a[i]);     return 0;  } 

(note element 0 initialized 2 , again initialised designator [0] 9) expecting element 0(which 2) replaced 9(as designator [0] = 9) , hence o/p become

   9    1   0   5   4   0   25 

unfortunately wrong o/p came;

   9    4   0   5   0   0   25 

any explanation unexpected o/p?

the process of initializing array initializer basically:

1. set index counter 0, , initialize entire array 0s
2. go through initializer elements left right
3. if initializer element has designated index, set index counter designated index
4. store initializer element value @ index given index counter
5. increment index counter
6. go step 3 if there more initializer elements.