Sentinel issue

This is a discussion on Sentinel issue within the C Programming forums, part of the General Programming Boards category; i have often seen statements written like this : while(1){} for example... if the sentinel in the while statement is ...

  1. #1
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    Sentinel issue

    i have often seen statements written like this :

    while(1){} for example...

    if the sentinel in the while statement is not a va riable, how is the loop going to end? how are we gonna end the loop?
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  2. #2
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    while(1) will keep on going forever just like
    for( ; ; )

    you can break; out of the loop

  3. #3
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    Re: Sentinel issue

    Originally posted by fkheng
    i have often seen statements written like this :

    while(1){} for example...

    if the sentinel in the while statement is not a va riable, how is the loop going to end? how are we gonna end the loop?
    It doesn't. What you have is a infinite loop.

    Inside the block a break; is executed to break out of the loop.

    This type of while can be used when there is no clear sentinel to exit the loop.
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