Proper form for Simple Conditional statements?

[TAZIN]

What's the scoop on simple conditional statements like shown below...Should you use #1 or #2?

#1
if (blah != 0)
    tnt = yyz;
else
    tnt = 0;

#2
if (blah != 0)
{
    tnt = yyz;
}
else
{
    tnt = 0;
}

If #1 is acceptable practice; can it still be used in nested conditional statements?

[tabstop]

What's the scoop on simple conditional statements like shown below...Should you use #1 or #2?

Yes. (The general preference would probably be #2, as then adding a line can't get you into trouble for getting the braces. Also a lot of editors can add braces for you anyway.)

If #1 is acceptable practice; can it still be used in nested conditional statements?

Of course.