Calculation of the absolute value of the given number is the simplest example of using the algorithm with a decision. For a given number x the absolute value |x| is defined as:

• x, if x ≥ 0,
• -x, otherwise.

The operation of calculating the absolute value of x we can present by the following block diagram:

Example:
Assume that x is equal to 5. We check decision "if 5 ≥ 0?". Yes - so the result is equal to x, so it is 5.
Assume that x is equal to -3, now. We check decision "if -3 ≥ 0?". It is equal to No, so result is equal to -x, so it is - -3, two minuses give us +, so the final result is equal to 3.

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Author	Progam language	Comment	Download	Rate
Tomasz Lubiński	C#	MS Visual Studio .net		/ 0
Tomasz Lubiński	C/C++			/ 0
Tomasz Lubiński	Delphi/Pascal			/ 0
Tomasz Lubiński	Java			/ 0
Hubert Pietrusiak	Python	Python 2.6 - UTF-8		/ 1
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