Why are multiple semicolons allowed? [duplicate]

Answer 1

The empty statement is valid in all C-derived languages. The most common idiomatic use is in a for statement, e.g.:

for (; ; )
{
}

OR

while (Method())
   ;

OR

void F() {
   //...
   if (done) goto exit;
   //...
   exit: ;
}

OR

if (true)
 {
      ;
 }

OR

if (true)
    ;

All statement are valid.