How to fopen in this case?

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dmfwlansejr
dmfwlansejr 2023-2-21
评论： dmfwlansejr 2023-2-21
Hi Everybody
Case1
fid = fopen('TTL_1.txt', 'w');
fprintf(fid3,'%s \n','ABCD;');
fclose(fid3);
Case2
file_name='TTL_1';
fid = fopen('file_name.txt', 'w');
fprintf(fid3,'%s \n','ABCD;');
fclose(fid3);
Case1 is OK!
However, Case 2 does not create a file.
How to fopen in this case?
Thanks!

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采纳的回答

the cyclist
the cyclist 2023-2-21
You need to concatenate two character arrays, one of which you defined ahead ...
file_name='TTL_1';
fid = fopen([file_name,'.txt'], 'w');

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