1.7(SimplePalindromeMax)

//https://vk.com/evgenykravchenko0

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#include <stdio.h>
#include <conio.h>
//-— функция —-
int Simple ( int N )
{
  for ( int i = 2; i*i <= N; i ++ )
  {
    if ( N % i == 0 )
      return 0;
  }
  return N;
}
int main()
{
  int pali = 0;
  int per;
  int i;
  int N;
  int max = 0;
  printf("Введите значение N : ");
  scanf("%d", &N);
  for (i = 1;i <= N;i++)
  {
    if (Simple(i))
    {
       per = i;
       //pali = 0;
       while( per != 0 )
       {
         pali = pali * 10;
         pali = pali + per % 10;
         per = per / 10;
       }
       if ( i == pali && i > max)
         max = i;
    }
    pali = 0;
  }
  printf("наибольший простой палиндром %d", max);

  return 0;
}