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

namespace ConsoleApp1
{
    class Program
    {
        static void Main(string[] args)
        {
            int a = 10; // a = 10
            int b = 15 + 25; // b = 40
            int c = a * b + 8; // c = 408
            int d = (5 + 5) / 2; // d = 5
            bool b_a = true; // b_a = true;
            bool b_b = true != false; // b_b = true
            bool b_c = b_a == b_b; // b_c = true
            bool b_d = b_a != b_c; // b_d = false
            bool b_e = b_a && b_d; // b_e = false
            bool b_f = b_e || b_d; // b_f = false
            string s = “test” + “ “ + “test2“; // s = "test test2"
        }
    }
}