using System;
class Plus
{
    static void Main()
    {
        Console.WriteLine(+5);        // unary plus
        Console.WriteLine(5 + 5);     // addition
        Console.WriteLine(5 + .5);    // addition
        Console.WriteLine("5" + "5"); // string concatenation
        Console.WriteLine(5.0 + "5"); // string concatenation
        // note automatic conversion from double to string
    }
}

   
     

#region License
// Copyright (c) 2007 James Newton-King
//
// Permission is hereby granted, free of charge, to any person
// obtaining a copy of this software and associated documentation
// files (the “Software”), to deal in the Software without
// restriction, including without limitation the rights to use,
// copy, modify, merge, publish, distribute, sublicense, and/or sell
// copies of the Software, and to permit persons to whom the
// Software is furnished to do so, subject to the following
// conditions:
//
// The above copyright notice and this permission notice shall be
// included in all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED “AS IS”, WITHOUT WARRANTY OF ANY KIND,
// EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
// OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
// NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
// HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
// WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
// FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
// OTHER DEALINGS IN THE SOFTWARE.
#endregion

using System;
using System.Collections.Generic;
using System.Text;

namespace Newtonsoft.Json.Utilities
{
internal class MathUtils
{

public static int GetDecimalPlaces(double value)
{
// increasing max decimal places above 10 produces weirdness
int maxDecimalPlaces = 10;
double threshold = Math.Pow(0.1d, maxDecimalPlaces);

if (value == 0.0)
return 0;
int decimalPlaces = 0;
while (value – Math.Floor(value) > threshold && decimalPlaces < maxDecimalPlaces) { value *= 10.0; decimalPlaces++; } return decimalPlaces; } } } [/csharp]

   
  
using System;

public class NumParsingApp
{
    public static void Main(string[] args)
    {
        int i = int.Parse("12345");
        Console.WriteLine("i = {0}", i);
   
        int j = Int32.Parse("12345");
        Console.WriteLine("j = {0}", j);
   
        double d = Double.Parse("1.2345E+6");
        Console.WriteLine("d = {0:F}", d);
   
        string s = i.ToString();
        Console.WriteLine("s = {0}", s);
    }
}

   
     

   
  

using System;
using System.Collections.Generic;
using System.Text;

class Program {
    static void Main(string[] args) {
        Console.WriteLine("C format: {0:C}", 99989.987);
        Console.WriteLine("D9 format: {0:D9}", 99999);
        Console.WriteLine("E format: {0:E}", 99999.76543);
        Console.WriteLine("F3 format: {0:F3}", 99999.9999);
        Console.WriteLine("N format: {0:N}", 99999);
        Console.WriteLine("X format: {0:X}", 99999);
        Console.WriteLine("x format: {0:x}", 99999);

    }
}

   
     

   
  

using System;
using System.Collections.Generic;
using System.Text;

class Program {
    static void Main(string[] args) {
        Console.WriteLine("-> double.Epsilon: {0}", double.Epsilon);
        Console.WriteLine("-> double.PositiveInfinity: {0}", double.PositiveInfinity);
        Console.WriteLine("-> double.NegativeInfinity: {0}", double.NegativeInfinity);
        Console.WriteLine("-> double.MaxValue: {0}", double.MaxValue);
        Console.WriteLine("-> double.MinValue: {0}", double.MinValue);
    }
}

   
     

   
 
/*  
   This program converts Fahrenheit to Celsius. 
 
   Call this program FtoC.cs. 
*/ 
 
using System; 
  
public class FtoC {  
  public static void Main() {  
    double f; // holds the temperature in Fahrenheit 
    double c; // holds the temparture in Celsius 
 
    f = 59.0; // start with 59 degrees Fahrenheit 
 
    c = 5.0 / 9.0 * (f - 32.0); // convert to Celsius 
 
    Console.Write(f + " degrees Fahrenheit is "); 
    Console.WriteLine(c + " degrees Celsius."); 
  }  
}


           
         
     

   
 
/*
C# A Beginner's Guide
By Schildt

Publisher: Osborne McGraw-Hill
ISBN: 0072133295
*/
/* 
   Project 2-1 
 
   Talking to Mars 
 
   Call this file mars.cs 
*/ 
 
using System; 
 
public class Mars {    
  public static void Main() {    
    double distance; 
    double lightspeed; 
    double delay; 
    double delay_in_min; 
 
    distance = 34000000; // 34,000,000 miles 
    lightspeed = 186000; // 186,000 per second 
 
    delay = distance / lightspeed;     
 
    Console.WriteLine("Time delay when talking to Mars: " + 
                      delay + " seconds."); 
     
    delay_in_min = delay / 60; 
 
    Console.WriteLine("This is " + delay_in_min + 
                      " minutes."); 
  }    
}