Python Front-end to GCC

[Steven D'Aprano]

On Tue, 22 Oct 2013 15:39:42 +0000, Grant Edwards wrote:

>> No, I was thinking of an array. Arrays aren't automatically initialised
>> in C.
> 
> If they are static or global, then _yes_they_are_.  They are zeroed.

Not that I don't believe you, but do you have a reference for this? 
Because I keep finding references to uninitialised C arrays filled with 
garbage if you don't initialise them.

Wait... hang on a second...

/fires up the ol' trusty gcc


[steve at ando c]$ cat array_init.c
#include<stdio.h>

int main()
{
  int i;
  int arr[10];
  for (i = 0; i < 10; i++) {
    printf("arr[%d] = %d\n", i, arr[i]);
    }
    printf("\n");
    return 0;
}

[steve at ando c]$ gcc array_init.c
[steve at ando c]$ ./a.out
arr[0] = -1082002360
arr[1] = 134513317
arr[2] = 2527220
arr[3] = 2519564
arr[4] = -1082002312
arr[5] = 134513753
arr[6] = 1294213
arr[7] = -1082002164
arr[8] = -1082002312
arr[9] = 2527220


What am I missing here?


-- 
Steven