Tricky string to number

Question

mortain Antonio 2011-5-12

0
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此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/7261-tricky-string-to-number

Hello,

I'm writing a script in Matlab which is useful for running different CFX simulations. The latter provides automatically the name to the files of the form: "file_001", "file_002"... "file_00i". I am trying to give this name to some files but I cannot suceed. THis is my attempt:

    name2= num2str(i,'%3.0')
    ofile2 = strcat('file_',name2);

which gives file_

In addition I need to write on a file this sentence: "cfx5solve -def Sol_00i.res -ccl file_00i"

even in this case I am experiencing some problems. THIs is my attempt:

fprintf(fid1,'cfx5solve -def Sol_%3.0f.res -ccl file_%3.0f',i,i);

and it gives "cfx5solve -def Sol_ i.res -ccl file_ i"

Have you got any idea, please.

Thank you very much for your time!

p.s. i goes from 1 to 260

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Answer 1

Walter Roberson 2011-5-12

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此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/7261-tricky-string-to-number#answer_9968

在 MATLAB Online 中打开

ofile2 = sprintf('file_%03d',i);

or if you want to use the same method you started with,

name2 = num2str(i,'%03d');

What you were trying for the other line should have given you a number in the appropriate places as long as "i" was assigned a number (it defaults to being the square root of negative one)

fprintf(fid1,'cfx5solve -def Sol_%03d.res -ccl %s',i,ofile2);