C: why are extra semicolons OK?

Question

#include 

int main() {
    int a = -1, b = -10, c = 5;
    if (a > b)
        printf(\"Hello World\");
    else
        printf(\"Get out World\");;;;;         


        

Answer 1

Extra semicolons in general are not "OK".

For example, changing your code slightly:

#include 

int main() {
    int a = -1, b = -10, c = 5;
    if (a > b)
        printf("Hello World");;;;;;
    else
        printf("Get out World");
}

That won't even compile.

Another example, and this one does compile:

   ...

   int done = 0;

   ...

   while ( !done );
   {
       ...

       done = 1;
   }

   ...