the differences between int and double

   
/*
C#: The Complete Reference 
by Herbert Schildt 

Publisher: Osborne/McGraw-Hill (March 8, 2002)
ISBN: 0072134852
*/
/*  
   This program illustrates the differences 
   between int and double. 
*/  
 
using System; 
 
public class Example3IntDouble {  
  public static void Main() {  
    int ivar;     // this declares an int variable 
    double dvar;  // this declares a floating-point variable 
 
    ivar = 100;   // assign ivar the value 100 
    
    dvar = 100.0; // assign dvar the value 100.0 
 
    Console.WriteLine("Original value of ivar: " + ivar); 
    Console.WriteLine("Original value of dvar: " + dvar); 
 
    Console.WriteLine(); // print a blank line 
 
    // now, divide both by 3 
    ivar = ivar / 3;  
    dvar = dvar / 3.0; 
 
    Console.WriteLine("ivar after division: " + ivar); 
    Console.WriteLine("dvar after division: " + dvar); 
  }  
}

1.	Compute the area of a circle
2.	Implement the Pythagorean Theorem
3.	Talking to Mars: double value calculation
4.	converts Fahrenheit to Celsius
5.	Epsilon, PositiveInfinity, NegativeInfinity, MaxValue, MinValue
6.	double number format: 0:C, 0:D9, 0:E, 0:F3, 0:N, 0:X, 0:x
7.	Format double value
8.	Get Decimal Places
9.	Automatic conversion from double to string
10.	An int, a short, a float, and a double are added together giving a double result.
11.	Test to see if a double is a finite number (is not NaN or Infinity).
12.	Double.Epsilon Field represents the smallest positive Double value that is greater than zero.
13.	Availible Double Range
14.	Truncates the specified double.
15.	Is Nearly Equal
16.	Shifts the given value into the range

the differences between int and double : double « Data Types « C# / C Sharp

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