if else if else for loop
using System;
class NumbersNotDivisibleByThreeAndSeven
{
static void Main()
{
Console.WriteLine("Please enter your number: ");
int n = int.Parse(Console.ReadLine());
for (int i = 1; i <= n; i++)
{
if (i % 3 == 0)
{
continue;
}
else if (i % 7 ==0)
{
continue;
}
Console.Write("{0} ", i);
}
Console.WriteLine();
}
}