keep fscanf past wrong format value

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Santiago
Santiago 2023-5-15
回答： Walter Roberson 2023-5-15
Ran in:
Hello, im having this problem with feof function and fscanf. I want to read all the whole numbers but it stops when it reaches something that is not. How can I make it ignore that and keep scanning?
fid = fopen("testdata.txt","r");
a = [];
i = 0;
while ~feof(fid)
i = i + 1;
a(i) = fscanf(fid, '%d', 1);
end
Unable to perform assignment because the left and right sides have a different number of elements.
fclose(fid);
  1 个评论
Rik
Rik 2023-5-15
Wouldn't you be better off reading the entire file and then matching each line with a regular expression?

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采纳的回答

Walter Roberson
Walter Roberson 2023-5-15
Unless you have integers that might have value outside of +/- 2^53 then there is little point using a %d format. Use a %f format instead: that will accept floating point numbers without any reading problems. You can always check that everything is integer afterwards.

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