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dehu87

Tue May 27, 2008 1:01 pm


What does += or *= mean?

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Im new to turing and i saw a program that included += this symbol. My question is 
what does += or *= mean?


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Dan

Tue May 27, 2008 1:14 pm


RE:What does += or *= mean?

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saying somthing like

x += 1

is equlent to saying

x = x +1


The same goes for the * operation. Simpley put it means add (for +=) or times (for *=) the varible on the left by the stamnet on the right and store it back in the varible on the left.


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isaiahk9

Tue May 27, 2008 3:07 pm


RE:What does += or *= mean?

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To be exact,

x += 1

is equivalent to saying

x := x + 1


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Sean

Tue May 27, 2008 3:28 pm


Re: What does += or *= mean?

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That's identical to what Dan said.


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Mackie

Tue May 27, 2008 3:29 pm


RE:What does += or *= mean?

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Not really. There is a colon that dan missed.


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Tony

Tue May 27, 2008 3:34 pm


RE:What does += or *= mean?

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The colon was implied.

Generally speaking, = is the assignment operator, while == is the comparison for equality. So the difference is between pseudocode and Turing's syntax. Which in this case is negligible.


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Dan

Tue May 27, 2008 6:32 pm


RE:What does += or *= mean?

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For more useless facts, saying x = x + 1 in turing is only a warning and will still run the code in most versions ;), tho yes i was going for pseudocode.