Read first letter of each line of a .txt file

Given an input .txt file, how can I extract the first letter of each line of that file.

Ex: file.txt is

I’ve worn a black suit

my entire life. It suits the war

my eyes ignite.

My sins sit on my lap,

bald, blind, desperate

for the mercy of lost roads,

glottal white lines.

Would output: 'Immmbfg'

Answer 1

[Image Analyst]

Did you see the help for fgetl()? Just modify it to add an array for the first characters of the lines:

fid = fopen('fgetl.m');
tline = fgetl(fid);
lineNumber = 1;
while ischar(tline)
    disp(tline)
    firstCharacters(lineNumber) = tline(1);
    tline = fgetl(fid);
    lineNumber = lineNumber + 1;
end
fclose(fid);

[Bob Whiley]

It works, thanks!

[Image Analyst]

Great. Can you mark the Answer officially as "Accepted" then? Thanks.