using System;
using System.Text.RegularExpressions;
namespace ConsoleApplication_C_Sharp
{
static class Program
{
static void Main(string[] args)
{
string str = "c# 13 java 40 8 c++ 999 c 1234";
string[] numbers = Regex.Split(str, @"\D+");
foreach (string s in numbers)
{
if (!string.IsNullOrEmpty(s))
{
int n = int.Parse(s);
Console.WriteLine(n);
}
}
}
}
}
/*
run:
13
40
8
999
1234
*/