u3_4

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace ConsoleApplication20
{
    class Program
    {
        static void Main(string[] args)
        {
            Console.WriteLine("Pls import nr1: ");
            int nr1 = Convert.ToInt32(Console.ReadLine());

            Console.WriteLine("Pls import nr2: ");
            int nr2 = Convert.ToInt32(Console.ReadLine());

            int min = Math.Min(nr1, nr2);
            int max = Math.Max(nr1, nr2);
            int sum = 0;

            for(int i = min; i < max+1; i++)
            {
                sum += i;
            }
            Console.WriteLine("Total sum is {0}", sum);
            Console.ReadLine();
        }
    }
}