I ran across this expression in my textbook and I can't seem to find the answer in it.

In the expression:

for ( ;; )
{
//some iostream statements here
}

What does ;; represent in the For loop?

Thanks, MB

Basically, a for() loop has 3 sections in the parenthesis, each separated by a semicolon.

for( Do Once at the beginning of the loop ; Continue looping if this is true or blank ; Do once at the end of each iteration )

You can leave any of the sections out so for( ;; ) is simply a loop that goes on forever. If you want to exit this kind of loop, use the statement break; from within the loop.

Thank you very much.