;

#if DEBUG
    #define ASSERT(_x) Assert(_x)
#else
    #define ASSERT(_x)
#endif


ASSERT(test);    // Results in null statement in non-debug builds

while (*(dst++) = *(src++))
    ;

void foo(void)
{
    // ...

exit:
    ;
}

while (somethingWithSideEffects()) ;

if ( !( overly complex condition ) )
  {
  do stuff
  }

if ( overly complex condition )
  ;  // do nothing
else
  {
  do stuff
  }

while (!kbhit())
     ;

if( scanf("%d",&integer) == 0 )
{
    while( getchar() != 'n' ) ;
    // ....
}

for (;;)                 // Loop "forever"

for (int i=10; i--; )    // 9..0

if(condition1)
     /* do nothing */ ;
else if(condition2)
     do_something;
else do_something_else;

if(!condition1 && condition2)
    do_something;
else if(!condition1)
    do_something_else;

if(!condition1) {
    if(condition2)
         do_something;
    else do_something_else;
}