isletter true false
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How does isletter work here. Is it the value 1 that makes it executable and the value 0 that makes it not excecute and go to else?
采纳的回答
per isakson
2011-10-15
isletter is a function, which returns a logical value. The logical values, true and false, are displayed as 1 and 0, respectively by Matlab. Test by running
class( isletter('a'))
Thus, you may read "if true" execute the if-clause else execute the else-clause.
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Wayne King
2011-10-15
0 个投票
I don't see isletter() in what you've posted. I see an if statement based on the output of menu()
The menu() call you show outputs a 1,2,or 3 based on what the user selects. 1 for Cheese, 2 for Shroom, and 3 for Sausage.
If the user were to simply kill the figure window, then output would be 0.
2 个评论
the cyclist
2011-10-15
Wayne, you need to scroll down a bit to see the relevant section he is asking about.
Wayne King
2011-10-15
@cyclist, :) oh I see
the cyclist
2011-10-15
0 个投票
Basically, yes. "1" is a representation of the boolean "true", and "0" is a representation of the boolean "false". So, "if 1" means "if true", and the statement executes accordingly.
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2011-10-15
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