why use do while?

[julian]

#define APP_ERROR_CHECK(ERR_CODE)
do
{
const uint32_t LOCAL_ERR_CODE = (ERR_CODE);
if (LOCAL_ERR_CODE != NRF_SUCCESS)
{
APP_ERROR_HANDLER(LOCAL_ERR_CODE);
}
} while (0)

I saw this a lot, is it for save one int from stack? if so how about just use {}

[Håkon Alseth]

Hi Julian,

This is a way of nesting a multistatement function. It's widely used in C. stackoverflow.com/.../do-while-0-what-is-it-good-for

-H