From b4f5bef52b8745fbd9828e5de3c1e782e830e843 Mon Sep 17 00:00:00 2001
From: Ajay Chhajed <ajaychhajed@Ajays-MacBook-Air.local>
Date: Thu, 8 Oct 2020 10:08:40 +0530
Subject: [PATCH] effective algorithm

---
 print_primes | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/print_primes b/print_primes
index 3569361..e462b1a 100644
--- a/print_primes
+++ b/print_primes
@@ -9,7 +9,7 @@ int main(void)//this is because input is nothing
     printf("2\n");
     for (i=2;i<=a;i++)
         {
-         for (j=2;j<i;j++)
+         for (j=2;j<=sqrt(i);j++) // making it effective
              {
               k = i % j;
               if (k==0)