Chapter 5
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
Help!
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| There are 3 different was in which a set of instructions can be repeated and each way is determined by where the decision to repeat is placed. They are: | Leading Decision (Beginning), Trailing Decision (End) and Counted (# of times).
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| DOWHILE is which type of loop? | Leading Decision
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| When designing a DOWHILE loop there are two important things to remember: | Because it is a leading decision loop, some processing is required before the condition can be tested (values set to zero) and the condition must at some point be set to false, otherwise the loop is endless.
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| When there are an unknown number of items or loops to be processed how can data be controlled? | Trailer record or Sentinel
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| What is an EOF | End of file marker
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| A read statement immediately prior to a DOWHILE clause is known as a: | Priming Read
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| REPEAT...UNTIL structure differs fundamentally with the DOWHILE structure in where the 'blank' is tested. | Condition
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| REPEAT...UNTIL structure will always be executed... | At least once
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| There is no need for a 'blank' in a REPEAT...UNTIL structure. | Priming read
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| The simple keyword for a counted loop is: | DO
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Review the information in the table. When you are ready to quiz yourself you can hide individual columns or the entire table. Then you can click on the empty cells to reveal the answer. Try to recall what will be displayed before clicking the empty cell.
To hide a column, click on the column name.
To hide the entire table, click on the "Hide All" button.
You may also shuffle the rows of the table by clicking on the "Shuffle" button.
Or sort by any of the columns using the down arrow next to any column heading.
If you know all the data on any row, you can temporarily remove it by tapping the trash can to the right of the row.
To hide a column, click on the column name.
To hide the entire table, click on the "Hide All" button.
You may also shuffle the rows of the table by clicking on the "Shuffle" button.
Or sort by any of the columns using the down arrow next to any column heading.
If you know all the data on any row, you can temporarily remove it by tapping the trash can to the right of the row.
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