how to find the total no of letters in a text file in matlab
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Muhammad Usman Saleem
el 8 de Jun. de 2015
Comentada: Walter Roberson
el 23 de Sept. de 2016
Hi ;
I am going to make a function called letter_counter that takes the name of a text file as input and returns the number of letters (i.e., any of the characters, a-to-z and A-to-Z) that the file contains. i have given that hint: You can use the built-in function isletter. If there is a problem opening the file, the function returns -1.
I am going that code but do not know what i am doing
function m=letter_counter(file)
fid=fopen(file,'rt')
m = char(fread(fid,inf));
fclose
if fid~=fopen(file,'rt')
m=-1;
end
end
I am getting that error
Feedback: Your program made an error for argument(s) 'letter_counter.m'
Your solution is _not_ correct.
I do not know what i have made. Please assist about the correct one. Thanks in advance for assistance...
6 comentarios
Kapil Dhanwani
el 23 de Sept. de 2016
what to do if i want to count number of digits(0-9) not letter?
Walter Roberson
el 23 de Sept. de 2016
You would read the help documentation for isletter() and check out the various routines mentioned in 'See Also'
Respuesta aceptada
Image Analyst
el 8 de Jun. de 2015
Your m is just all the bytes read. It's not taking into account that there are other characters like punctuation marks that they do not want counted. I don't see where you're checking if the character is in the range a-z or A-Z. Where are you doing anything like
letters = (m >= 'a' & m <= 'z') | (m >= 'A' & m <= 'Z');
That's why it's not giving the correct answer. Now do you know what letters above is? Do you know what you would do with that to count the valid letters?
6 comentarios
Image Analyst
el 13 de Jun. de 2015
There is no line like this:
m = char(fread(fid,inf));
like you had before. Why did you remove that line?
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