MATLAB: Code is too long

for loopif statementwhile loop

a = 4;
b = input ('2+2=?    ')
if b == a
    'ok'
else
    b = input ('retry  ')
    if b == a
        'ok'
    else
        b = input ('retry  ')
        if b == a
            'ok'
        else 'NOK'
        end
    end
end

Best Answer

I think you want
a = 4;
b = 0;
while b ~= a
  b = input ('2+2=?    ');
  if b == a
    break;
  end
  fprintf('Incorrect.  Try again.\n');
end
fprintf('Correct.\n');
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