Double.CompareTo Method in C# with Examples
Last Updated :
19 Mar, 2019
Double.CompareTo Method is used to compare the current instance to a specified object or Double object. It will return an integer which shows whether the value of the current instance is greater than, less than or equal to the value of the specified object or Double object. There are 2 methods in the overload list of this method as follows:
- CompareTo(Double) Method
- CompareTo(Object) Method
Double.CompareTo(Double) Method
Double.CompareTo() Method is used to compare the current instance to a specified double-precision floating-point number and returns an integer which shows whether the value of this instance is less than, equal to, or greater than the value of the specified double-precision floating-point number.
Syntax:
public int CompareTo (double value);
Here, it takes a double-precision floating-point number to compare.
Return Value: This method returns a signed number indicating the relative values of this instance and value.
- Less than zero: This instance is less than value or this instance is not a number (NaN) and value is a number.
- Zero: This instance is equal to value or both this instance and value are not a number (NaN), PositiveInfinity, or NegativeInfinity.
- Greater than zero: This instance is greater than value or this instance is a number and value is not a number (NaN).
Below programs illustrate the use of Double.CompareTo(Double) Method:
Example 1:
using System;
using System.Globalization;
class GFG {
public static void Main()
{
double value1 = 10d;
double value2 = 20d;
int status = value1.CompareTo(value2);
if (status > 0)
Console.WriteLine( "{0} is greater than {1}" ,
value1, value2);
else if (status < 0)
Console.WriteLine( "{0} is less than {1}" ,
value1, value2);
else
Console.WriteLine( "{0} is equal to {1}" ,
value1, value2);
}
}
|
Output:
10 is less than 20
Example 2:
using System;
using System.Globalization;
class GFG {
public static void Main()
{
get (5d, 7d);
get (5.5d, 4.5d);
get (10d, 20d);
get (7.5d, 19.5d);
}
public static void get ( double value1,
double value2)
{
int status = value1.CompareTo(value2);
if (status > 0)
Console.WriteLine( "{0} is greater than {1}" ,
value1, value2);
else if (status < 0)
Console.WriteLine( "{0} is less than {1}" ,
value1, value2);
else
Console.WriteLine( "{0} is equal to {1}" ,
value1, value2);
}
}
|
Output:
5 is less than 7
5.5 is greater than 4.5
10 is less than 20
7.5 is less than 19.5
Double.CompareTo(Object) Method
Double.CompareTo() Method is used to compare the current instance to a specified object and returns an integer which indicates whether the value of the current instance is less than, equal to, or greater than the value of the specified object.
Syntax:
public int CompareTo (object value);
Here, it takes an object to compare, or null.
Return Value: This method returns a signed number indicating the relative values of this instance and value.
- Less than zero: This instance is less than value or this instance is not a number (NaN) and value is a number.
- Zero: This instance is equal to value or both this instance and value are not a number (NaN), PositiveInfinity, or NegativeInfinity.
- Greater than zero: This instance is greater than value or this instance is a number and value is not a number (NaN).
Exception: It throws ArgumentException if value is not a Double.
Below programs illustrate the use of Double.CompareTo(Object) Method:
Example 1:
using System;
using System.Globalization;
class GFG {
public static void Main()
{
try {
double value1 = 10d;
object value2 = 20d;
int status = value1.CompareTo(value2);
if (status > 0)
Console.WriteLine( "{0} is greater than {1}" ,
value1, value2);
else if (status < 0)
Console.WriteLine( "{0} is less than {1}" ,
value1, value2);
else
Console.WriteLine( "{0} is equal to {1}" ,
value1, value2);
}
catch (ArgumentException e)
{
Console.WriteLine( "value2 must be double" );
Console.Write( "Exception Thrown: " );
Console.Write( "{0}" , e.GetType(), e.Message);
}
}
}
|
Output:
10 is less than 20
Example 2: For ArgumentException
using System;
using System.Globalization;
class GFG {
public static void Main()
{
try {
double value1 = 10d;
object value2 = 1 / 3;
int status = value1.CompareTo(value2);
if (status > 0)
Console.WriteLine( "{0} is greater than {1}" ,
value1, value2);
else if (status < 0)
Console.WriteLine( "{0} is less than {1}" ,
value1, value2);
else
Console.WriteLine( "{0} is equal to {1}" ,
value1, value2);
}
catch (ArgumentException e)
{
Console.WriteLine( "value2 must be double" );
Console.Write( "Exception Thrown: " );
Console.Write( "{0}" , e.GetType(), e.Message);
}
}
}
|
Output:
value2 must be double
Exception Thrown: System.ArgumentException
Reference:
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