Script to read, error check till user enters a valid file name that can be opened, then print out file name and close file.
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I am having the hardest trouble on the loop error-checking part that keeps checking still the user enters a valid filename that can be opened.
This is what I have so far:
% prompt user for name to be read and open
file = input('PLEASE INPUT FILE NAME TO BE READ:','s');
fopen(file,'r');
% loop error-check until valid filename can be opened
% print file name and close file
while fopen(file)~=0
fpirnt('FILE OPENED IS: %s\n',file);
fclose(file);
else
fprintf('PLEASE INPUT A VALID FILE NAME!\n','s');
file = input('PLEASE INPUT FILE NAME TO BE READ:','s');
end
what is going wrong?
Thank you!
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Réponse acceptée
Walter Roberson
le 25 Oct 2013
'while' does not permit an 'else', so you have a syntax error.
You cannot close a file by name, only by file identifier.
Hint: "break"
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