Undefined function or variable error
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option=input('Do you want to continue?(Y/N)','s');
while option == Y
%here comes body of loop
option=input('Do you want to continue?(Y/N)','s');
end
it says undefined function or variable input when I enter Y
采纳的回答
Replace while option == Y by
while strcmpi(option, 'y')
In your code Y is a function call, not the character, because the quotes are missing. Using strcmpi accepts lower and upper case characters and compares the string in total, not elementwise as teh == operator. See:
c = 'yy'
c == 'y' % This compares both characters and replies [true, true]
strcmp(c, 'y') % This is a scalar as wanted
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