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CSharp · Console

/Program.cs

using System;
using System.Linq;
					
public class Program
{
	public static void Main()
	{
		var strings = new string[] { "12", "abc", "1b", "0" };
		var ints = strings.Select(s => Int32.TryParse(s, out var i) ? (int?)i : null).Where(i => i != null).Select(i => (int)i);
		foreach (var i in ints)
		{
			 Console.WriteLine(i * 100);
		}
		
	}
}