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Questions and Answers
In a do-while loop, when is the test for continuation carried out?
In a do-while loop, when is the test for continuation carried out?
- When the loop is executed for the last time
- At the end of each pass through the loop (correct)
- When the loop is executed for the first time
- At the beginning of each pass through the loop
Which control structure guarantees that its statement will always be executed at least once?
Which control structure guarantees that its statement will always be executed at least once?
- do-while loop (correct)
- while loop
- for loop
- if-else statement
What is the difference between a while loop and a do-while loop?
What is the difference between a while loop and a do-while loop?
- A do-while executes zero or more times, while a while may never execute
- A do-while always executes once, while a while executes zero or more times
- A do-while always executes once, while a while may never execute
- A do-while executes one or more times, while a while may never execute (correct)
In a do-while loop, when does the evaluation of the control condition occur?
In a do-while loop, when does the evaluation of the control condition occur?
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What type of flowchart represents the control condition in a do-while loop?
What type of flowchart represents the control condition in a do-while loop?
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What is guaranteed in a do-while loop that may not occur in a while loop?
What is guaranteed in a do-while loop that may not occur in a while loop?
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Study Notes
Control Structures
- In a do-while loop, the test for continuation is carried out after the loop body is executed.
- The do-while loop guarantees that its statement will always be executed at least once.
- The main difference between a while loop and a do-while loop is that a while loop evaluates the condition before executing the loop body, whereas a do-while loop evaluates the condition after executing the loop body.
- In a do-while loop, the evaluation of the control condition occurs at the end of the loop.
- A diamond-shaped flowchart represents the control condition in a do-while loop.
- In a do-while loop, it is guaranteed that the loop body will be executed at least once, which may not occur in a while loop.
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