How to show non prime numbers (what is the contrari function of prime?)
1 vue (au cours des 30 derniers jours)
Afficher commentaires plus anciens
Toni Clares
le 9 Oct 2016
Modifié(e) : Walter Roberson
le 9 Oct 2016
clc
clear all
n=input('number') % Natural number that you want to know if it a prime number
i=2;
x=[];
if n==0 | n==1
disp('there are not prime numbers');
end
while i<=sqrt(n)
if rem(n,i)==0 %In this part i want to show the non prime numbers (i don't know the function name)
x=n
else %In this part i show the prime numbers
y=primes(n)
break
end
i=i+1;
end
fid=fopen('Prime_numbers.txt','w'); %In this final part i create a .txt document for save the prime
fprintf(fid,'%2d\t%2g\t',y);
fclose(fid);
fid=fopen('Non_prime_numbers.txt','w'); %In this final part i create a .txt document for save the non prime
fprintf(fid,'%2d\t%2g\t',x);
fclose(fid);
0 commentaires
Réponse acceptée
Walter Roberson
le 9 Oct 2016
You could use setdiff() of the range of values, asking to remove the primes.
2 commentaires
Plus de réponses (0)
Voir également
Catégories
En savoir plus sur Matrices and Arrays dans Help Center et File Exchange
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!