static void Main(string[] args)
{
Console.WriteLine("Write string for conversion to Int32");
Console.WriteLine("Write 'Exit' to exit programm");
string input = string.Empty;
do
{
input = Console.ReadLine();
input = input?.Trim(' ');
var resultNumber = 0;
Console.WriteLine(NumHelper.TryParse(input, out resultNumber)
? $"Number from string: {resultNumber}"
: $"Can not convert string: {input} to Int32");
} while (!input.ToLower().Equals("exit"));
}