array size of int and empty array

[jackel7777]

How do you find array size?

int array[] = {1,2,3,4};
size_t x = sizeof(array)/sizeof(int);
cout<<x;

2

why?

int array[3];
array[0] = 1;
array[2] = 2;

how to know if only 2 of the 3 array has been used only and array[1] is garbage value.

[guestgulkan]

How do you find array size?

int array[] = {1,2,3,4};
size_t x = sizeof(array)/sizeof(int);
cout<<x;

2


why?

Are you sure??
I bet everybody else gets 4.

[mcleano]

Codepad got 4: http://codepad.org/C8WU8R3A

[Galik]

jackel7777 wrote:

how to know if only 2 of the 3 array has been used only and array[1] is garbage value.

You can't. Its up to you to keep your data valid.