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How do I write a code to verify that the filename entered by the user ends in .txt?

조회 수: 4 (최근 30일)
This is what I have so far.
filename = input('Enter your filename ending in .txt: ', 's');
s1 = '.txt';
s2 == 'filename'
tf == strcmp(s1,s2)
if tf == 0
filename = input('Enter your filename ending in .txt: ', 's');
end
Thanks!

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Greg
Greg 2018년 11월 28일
편집: Greg 2018년 11월 28일
filename = input('Enter your filename ending in .txt: ', 's');
s1 = '.txt';
s2 == 'filename' % <-- I think you're confused on = versus == here
tf == strcmp(s1,s2) % <-- and here
if tf == 0
filename = input('Enter your filename ending in .txt: ', 's');
end
You can achieve this quite simply with:
filename = input(___);
while ~endsWith(filename,".txt")
filename = input(___);
end
endsWith was introduced in R2016b, and double quotes to create strings in R2017a.

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