How to use an if statement with isempty(strfind()) as a condition?

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Imad Alkassab
Imad Alkassab 2016 年 2 月 12 日
コメント済み: Imad Alkassab 2016 年 2 月 15 日
So I have this code where I need to calculate taxes over a salary entered by the subject. This subject may enter any Province marked by abbreviations such as 'ON', 'AB' and 'PE' and they are put in a cell array called B. I do not understand why even if i do not enter the said Province, MATLAB does execute this if statement and thus calculate taxes for every Province. Do you guys have a solution so the said code does not execute?
Note : This is only part of a code, the rest of it is pretty much a copy of this code only with the 'ON' changed for another Province string. There is also no error shown, the program only executes all of it and displays it.
EDIT : I did join my .m file, according to Star Strider's comment
W = isempty(strfind(B,'ON'));
if W
if Salary <= 36848
ON = 0.0605*Salary;
elseif 36848.01 <= Salary & Salary <= 73698
ON = 0.0915*Salary;
elseif Salaire > 73698
ON = 0.1116*Salary;
end
fprintf('%.2f en Ontario\n',ON)
end
Thank you all,
tl dr : MATLAB executes the program even if the cell does not contain what it has to find to execute.

採用された回答

Star Strider
Star Strider 2016 年 2 月 12 日
編集済み: Star Strider 2016 年 2 月 12 日
If you don’t enter a province, the isempty condition will be true. Using the logical negation (~) in the ‘W’ assignment would seem to be the correct logic:
B = {'ON', 'AB' 'PE'};
W = ~isempty(strfind(B,'ON'));
if W
fprintf(1, '\nCalculate Ontario taxes\n')
end
  5 件のコメント
Walter Roberson
Walter Roberson 2016 年 2 月 13 日
if strcmpi(B,'ON')
... do whatever for Ontario
end
Or
switch upper(B)
case 'ON':
... ontario
case 'MB':
... manitoba
end
Imad Alkassab
Imad Alkassab 2016 年 2 月 15 日
Thank you Walter!
I was able to find the solution to my problem with your comment. Also thanks to the rest of you who commented, your comments were all as valuable. It's my first time posting here, so I didn't know how to link a file and all.

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