Array of N prime numbers

Hello. I'm new to MatLab. I've just written a code to identify if a given number N is a prime number.

Basically, that's it:

function [out] = myIsPrime(n)

if n == 1

      out = 0;

elseif n == 2

      out = 1;

elseif all(rem(n,2:n-1) ~= 0)

      out = 1;

else

     out = 0;

end

end

Now I want my output to be the first 'N' prime numbers counting from 2 and up.

I've been trying for hours but my brain is just frozen. How do I do that using if, for or while loops?

[Gangga Fardede]

I want to ask, how to make a row, if we input number, the output will display prime number have a lot of n Like we input '4' abd will dispay '2 3 5 7'

Answer 1

[Walter Roberson]

while the count of primes found is less than your target count, keep trying the next number in sequence to determine whether it is prime; if it is then increment the count of primes found and store the prime in your array.

[Leandro Cavalheiro]

If I find a prime number, how do I store it? And how do I store only N numbers?

[Walter Roberson]

   num_primes_found = num_primes_found + 1;
   list_of_primes(num_primes_found) = the_candidate_number;

To store only N numbers, use a while loop on num_primes_found

[Leandro Cavalheiro]

I made it!

function [primes] = myNPrimes(N)

primes = 0;

k = 0;

f = 0;

while size(primes,2) < N
    k = k + 1;

      if k == 1
          out = 0;
      elseif k == 2
          out = 1;
      elseif all(rem(k,2:k-1) ~= 0)
          out = 1;
      else
          out = 0;
      end
      if out == 1
          f = f+1;
          primes(f) = k;
      end
  end
  end

Thanks