Logical operators with an if statement


   

/*
Mastering Visual C# .NET
by Jason Price, Mike Gunderloy

Publisher: Sybex;
ISBN: 0782129110
*/
/*
  Example4_4.cs illustrates the use of
  logical operators with an if statement
*/

public class Example4_4
{

  public static void Main()
  {

    int reactorTemp = 1500;
    string emergencyValve = "closed";

    if ((reactorTemp > 1000) && (emergencyValve == "closed"))
    {
      System.Console.WriteLine("Reactor meltdown in progress!");
    }

  }

}


           
          


illustrates the use of a nested if statement

/*
Mastering Visual C# .NET
by Jason Price, Mike Gunderloy

Publisher: Sybex;
ISBN: 0782129110
*/

/*
Example4_3.cs illustrates the use of
a nested if statement
*/

public class Example4_3
{

public static void Main()
{

int reactorTemp = 1500;
string emergencyValve = ” “;

if (reactorTemp < 1000) { System.Console.WriteLine("Reactor temperature normal"); } else { System.Console.WriteLine("Reactor temperature too high!"); if (emergencyValve == "closed") { System.Console.WriteLine("Reactor meltdown in progress!"); } } } } [/csharp]

Illustrates the use of an if statement that executes a block

/*
Mastering Visual C# .NET
by Jason Price, Mike Gunderloy

Publisher: Sybex;
ISBN: 0782129110
*/

/*
Example4_2.cs illustrates the use of an if statement
that executes a block
*/

public class Example4_2
{

public static void Main()
{

int smallNumber = 5;
int bigNumber = 100;

if (bigNumber < smallNumber) { System.Console.Write(bigNumber); System.Console.Write(" is less than "); System.Console.Write(smallNumber); } else { System.Console.Write(smallNumber); System.Console.Write(" is less than "); System.Console.Write(bigNumber); } } } [/csharp]

Illustrates the use of the if statement


   

/*
Mastering Visual C# .NET
by Jason Price, Mike Gunderloy

Publisher: Sybex;
ISBN: 0782129110
*/
/*
  Example4_1.cs illustrates the use of the if statement
*/

public class Example4_1
{

  public static void Main()
  {

    int smallNumber = 5;
    int bigNumber = 100;

    if (bigNumber > smallNumber)
      System.Console.WriteLine(bigNumber + " is greater than " +
        smallNumber);
    else
      System.Console.WriteLine(bigNumber + " is less than " +
        smallNumber);

  }

}


           
          


Another if else

/*
Learning C#
by Jesse Liberty

Publisher: O'Reilly
ISBN: 0596003765
*/
using System;
public class NestIfValues
{
static void Main()
{
int temp = 32;

if (temp <= 32) { Console.WriteLine("Warning! Ice on road!"); if (temp == 32) { Console.WriteLine( "Temp exactly freezing, beware of water."); } else { Console.WriteLine("Watch for black ice! Temp: {0}", temp); } } } } [/csharp]

If Else


   

/*
Learning C# 
by Jesse Liberty

Publisher: O&#039;Reilly 
ISBN: 0596003765
*/

 using System;

 namespace Branching
 {
     public class TestIfElse
     {
         static void Main()
         {
             int valueOne = 10;
             int valueTwo = 20;

             Console.WriteLine("Testing valueOne against valueTwo...");
             if ( valueOne > valueTwo )
             {
                 Console.WriteLine(
                     "ValueOne: {0} larger than ValueTwo: {1}",
                     valueOne, valueTwo);
             }       // end if
             else
             {
                 Console.WriteLine(
                     "Nope, ValueOne: {0} is NOT larger than ValueTwo: {1}",
                     valueOne, valueTwo);
             }       // end else

         }           // end Main
     }               // end class
 }                   // end namespace
           
          


If Branching


   

/*
Learning C# 
by Jesse Liberty

Publisher: O&#039;Reilly 
ISBN: 0596003765
*/

 using System;

 namespace Branching
 {
    public class TestBranching
    {
       static void Main()
       {
             int valueOne = 10;
             int valueTwo = 20;
             int valueThree = 30;

             Console.WriteLine("Testing valueOne against valueTwo...");
             if ( valueOne > valueTwo )
             {
                 Console.WriteLine(
                 "ValueOne: {0} larger than ValueTwo: {1}",
                 valueOne, valueTwo);
             }

             Console.WriteLine("Testing valueThree against valueTwo...");
             if ( valueThree > valueTwo )
             {
                 Console.WriteLine(
                     "ValueThree: {0} larger than ValueTwo: {1}",
                     valueThree, valueTwo);
             }   // end if

       }         // end Main
    }            // end class
 }               // end namespace