if loop error in MALAB
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ali hassan
am 2 Feb. 2022
Kommentiert: Steven Lord
am 2 Feb. 2022
i am using the following if loop but it is not executing:
n=[]
if n==[]
sprintf('a')
end
it dose not print 'a'
2 Kommentare
Steven Lord
am 2 Feb. 2022
From the documentation page: "if expression, statements, end evaluates an expression, and executes a group of statements when the expression is true. An expression is true when its result is nonempty and contains only nonzero elements (logical or real numeric). Otherwise, the expression is false."
Is your expression nonempty and does it contain only nonzero elements?
n = [];
n == []
Your expression is empty so the statements inside the if block are not executed.
If you look at the suggestion from James Tursa:
isempty(n)
This is nonempty and it contains only nonzero elements. Therefore the if statement's expression is true and so the statements inside the if block are executed.
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