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Entry and Exit Control Loops

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Questions and Answers

Which characteristic distinguishes an exit control loop from an entry control loop?

The exit control loop executes the loop body at least once regardless of the condition. (correct)
The entry control loop does not have a defined syntax structure.
The exit control loop checks the condition before executing the loop body.
The entry control loop always executes the loop body multiple times.

What is a common example of an entry control loop?

foreach loop
for loop (correct)
do...while loop
repeat until loop

What is the primary role of a condition in an entry control loop?

To guarantee that the loop will execute a specific number of times.
To execute the loop body without delay.
To control whether the loop body executes at all. (correct)
To determine the number of iterations the loop will have.

Which syntax correctly represents an entry control loop?

<p>while(condition) { Statements... } (A), for(initialization; condition; increment) { Statements... } (D)</p> Signup and view all the answers

In an exit control loop, when is the condition evaluated?

<p>After the first iteration of the loop body is executed. (B)</p> Signup and view all the answers

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Study Notes

Entry Control Loop

Checks the condition before executing the loop body.
The loop body may be skipped entirely if the condition is false initially.
Common examples include for and while loops.

Syntax for Entry Control Loop

Standard structure:

while(condition)
{
    Statement....
    Statement....
}

Exit Control Loop

Executes the loop body first, then checks the condition afterward.
Ensures that the loop body runs at least once, regardless of the condition.
The do...while loop serves as a primary example of this type.

Syntax for Exit Control Loop

Standard structure:

do
{
    Statements....
    Statements..
}while(condition);

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