How to compare strings within a loop

I am trying to create a program in which I want to compare my saved data which I have stored in cell with respect to the input given by the user. Since I have lot of data I dont want to compare one with each other manually, but I want to use loops command. Please point out my mistakes in below

clear all; close all; clc;

str{1} = 'http://vacationet.com/resort.php?id=22';

str{2} = 'http://jokusoftware.cz/file.php?id=icqj3';

str{3} = 'http://www.nichegardens.com/catalog/item.php?id=19114';

a0=input('Paste the http link to check its vulunerability ', 's');

n=1

for i=str{n};

if (strcmpi(a0,i))

sprintf('%s is vulunerable',a0);

else

n=n+1;

continue;

end

end

sprintf('%s is non vulunerable',a0)

[Hassan Jawed]

Thank you for your kind co-operation, it works perfectly fine

Answer 1

[Sindar]

No need to loop, strcmpi will compare a string to all strings in an array. If you don't care which string matches, use "any":

str{1} = 'url1'; 
str{2} = 'url2'; 
str{3} = 'url3'; 
a0=input('Paste the http link to check its vulunerability ', 's');
if any(strcmpi(a0,str))
    sprintf('%s is vulunerable',a0);
else
    sprintf('%s is non vulunerable',a0)
end

(Answers doesn't like links, thinks they mean spam)

[Sindar]

If you were to do it in a loop, make sure you're looping over the strings, not the characters in them (as you appear to be):

str{1} = 'url1'; 
str{2} = 'url2'; 
str{3} = 'url3'; 
a0=input('Paste the http link to check its vulunerability ', 's');
isvulnerable = false;
for ind=1:length(str)
    if strcmpi(a0,str{ind})
        sprintf('%s is vulunerable',a0);
        % if you find a match, end the loop and record
        isvulnerable=true;
        break
    end
end
% after checking all of them, print if no matches were found
if ~isvulnerable
    sprintf('%s is non vulunerable',a0)
end