Fill in the blanks in each of the following:a)  are used to document a program and improve...

Fill in the blanks in each of the following:

a)  are used to document a program and improve its readability.

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b) The function used to display information on the screen is .

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c) A C statement that makes a decision is .

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d) Calculations are normally performed by  statements.

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e) The  function inputs values from the keyboard.