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In this video, we'll look at the
continue and break statements in c++.

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The continue and break statements
can be used within all of c++ loop

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constructs to provide more explicit
control over the loopy behavior.

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Their behavior is really
easy to understand.

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When a continue statement is
executed in the loop, no further

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statements in the body of the loop
or executed and control immediately

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goes directly to the beginning of
the loop for the next iteration.

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So you can think of this as
skip processing in the rest

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of this iteration and go to
the beginning of the loop.

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In the case of the while loop
and the for loop, the condition

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will immediately be tested again.

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When the brake statement is executed
in the loop, no further

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statements in the body are executed
and the loop is terminated.

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So controllers transfer to
the statement immediately

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following the loop.

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Let's see an example that uses both
the continue and break statements.

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In this example, we have
a vector of integers.

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Let's assume that this data comes
from some sort of device and

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occasionally we get noise in the data.

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The noise is represented by the -1.

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We really don't want
to process the noise.

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We want to ignore it.

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We also need to stop processing
when we get to stop signal

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which is represented by -99.

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In this case, we can use the
range-based for loop to iterate

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over all the vector elements.

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At each iteration, we can
check if the value is -99

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in which case we are done.

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We could set of flag to done and
handle the done Boolean in the loop

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condition as we've done before or
we can simply breakout of the loop.

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In this case, we're using
the break statement to break

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out of the loop completely.

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In the else if statement, we know
we haven't seen a negative 99.

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So we can check from -1,
that represents noise.

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If we see it, we can continue.

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This stops the iteration and control
goes back to the beginning of the

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loop in a new iteration begins.

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Finally if we hit the l statement,
we know we don't have a -99

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and we know we don't have a
-1, so we process that data.

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In this case, we'll just display it.

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In this example, we display 1 2 3.

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Continue and break statements
are very, very easy to use.

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However, don't overuse them.

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I'm obviously exaggerating here.

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But if you have a loop that has
10 brakes and 12 continues in its

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body, that's a very complex piece
of code to try to understand.

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The less ways that you can come
into a loop and out of the loop, the

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better we can understand and debug it.

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We'll see the brake statement
again again when we talk about

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infinite loops in the next video.