What is happening here PLZ help me

Hi all,
this is very simple program but I am not getting why it is behaving like this. The second loop is not working as I expected whats wrong in that.

Code:

 

int main()
 {
     int i,j=5;
     Xuint8  data[i];   
     Xuint32 * const customLogicPtr = (Xuint32 *)0x84018000;//bram base 
   
     print("Enter the desired number\r\n");
   
   for(i=0;i<5;i++)
   {
       data[i] =  XUartLite_RecvByte(0x84000000); 
       *(customLogicPtr+i) = data[i];
     
       xil_printf("%c,%x\r\r\n",*(customLogicPtr+i),customLogicPtr+i);
     
   }

    print (" This is the temporary register...\r\n");

    while (j)
    {
        j--;
        xil_printf("%c,%x\r\r\n",*(customLogicPtr+j),customLogicPtr+j);
    }

       return 0;       
 }

This program's expected o/p is

Enter the desired number
1,84018000
2,84018004
3,84018008
4,8401800C
5,84018010

This is the temporary register...
5,84018010
4,8401800C
3,84018008
2,84018004
1,84018000


But I am getting
Enter the desired number
1,84018000
2,84018004
3,84018008
4,8401800C
5,84018010

This is the temporary register...
1,84018010 /* why it printing value 1 at this address
4,8401800C
5,84018008 /* here aswell*/
2,84018004
1,84018000


Thanks in advance

> Xuint8 data[i];
Unless you're using a C99 compiler, this is illegal.
In any event, i is uninitialised, so who knows how many entries you have.

Try
Xuint8 data[5];