Updating variable after each loop iteration

Hello everyone, I am almost new in matlab. I am trying to update my variable according to user's input. I want every letter I entered match with the generated_word, the letter will earse; in such way that promt(1)='m' will give newChr(1)='atlabcounity'; promt(2)='a' will give newChr(2)=tlbcounity'; promt(3)='t' will give newChr(3)='lbcouniy' and so on.

Here is the code that I have tried to run but its not working in my favor:

generated_word='matlabcommunity'
promt=[]:
newChr=[];

for i=1:length(generated_word)
    promt(i)=input("Enter: ",'s');
    
    % delete the correct input's letters from the generated word
    newChr=erase(generated_word,promt(i));
    disp(newChr)
    
    if promt == 'x'
        break
    end
end

disp(newChr)

Answer 1

[Walter Roberson]

generated_word='matlabcommunity'
promt = strings(0):
newChr=[];

for i=1:length(generated_word)
    promt(i)=input("Enter: ",'s');
    if promt(i) == 'x'
        break
    end    
    % delete the correct input's letters from the generated word
    newChr=erase(generated_word,promt(i));
    disp(newChr)
    generated_word = newChr;
end

disp(newChr)

Caution: your code has a bug for the case where the input word contains the same letter multiple times.

[Walter Roberson]

generated_word='matlabcommunity'

generated_word = 'matlabcommunity'

erase(generated_word, 'm')

ans = 'atlabcounity'

Notice that "erase" removes all occurances of the same letter. If you want to remove only the first occurence then either you should use a different function, or else you should arrange so that the bit to be erased matches only one place, by carefully generating a patternarray() such as by using anchors. You might want to reconsider using erase(). For example

regexprep(generated_word, 'm', '', 'once')

ans = 'atlabcommunity'

[Dinh Phuc Nguyen]

Thank you for your help!!! I'm very much appreciate this!!

Answer 2

[KSSV]

generated_word='matlabcommunity' ; 
newChr=[];
promt = cell(length(generated_word),1) ; 
for i=1:length(generated_word)
    promt{i}=input("Enter: ",'s');
    
    % delete the correct input's letters from the generated word
    newChr=erase(generated_word,promt{i});
    disp(newChr)
    
    if strcmp(promt{i},'x')
        break
    end
end

disp(newChr)

[Dinh Phuc Nguyen]

Thank you for answearing my question, but the code is not really updated the genereated_word every iteration like promt(1)='m' will give newChr(1)='atlabcounity'; promt(2)='a' will give newChr(2)=tlbcounity'