[stupok]

server_print("%s: %d kill%s", kname, g_Kills[k] > 1 ? "s" : "")

->

server_print("%s: %d kill%s", kname, g_Kills[k] == 1 ? "" : "s")

0 kills
1 kill
2 kills

Also, since this is supposed to be instructive, I think you should simply show two methods of achieving the same result.

Example 1:

if( x > 1 )
{
    y = 1
}
else
{
    y = 0
}

Example 2:

y = ( x > 1 ? 1 : 0 )

These are equivalent.