Trusted answers to developer questions
How to check if two double values are equal in C#
Theodore Kelechukwu OnyejiakuOverview
Two double objects are equal if they both have the same values. The Double.Equals() method in C# determines if two double objects are equal. It returns true if they are equal and false otherwise.
Syntax
public bool Equals (double d);
Syntax for checking if two double objects are equal
Parameters
d: This is the double object we want to compare with another double instance.
Return value
A boolean value is returned. It returns true if d is equal to the instance. Otherwise, false is returned.
Example
// use System
using System;
// create class
class DoubleEquality
{
// main method
static void Main()
{
// create double values
double d1 = 343.13423;
double d2 = 1.4545;
double d3 = 5.7;
double d4 = d3 * 1 / 1;
// check equality
bool b1 = d1.Equals(d2);
bool b2 = d2.Equals(d3);
bool b3 = d3.Equals(d4);
bool b4 = d4.Equals(d3);
// print results
Console.WriteLine(b1); // False
Console.WriteLine(b2); // False
Console.WriteLine(b3); // True
Console.WriteLine(b4); // True
}
}Check for equality of double values in C#
Explanation
-
Lines 10–13: We create some
doublevariables,d1,d2,d3andd4. Then we initialize them with some values. -
Line 16: We check if
d1is equal tod2. -
Line 17: We check if
d2is equal tod3. -
Line 18: We check if
d3is equal tod4. -
Line 19: We check if
d4is equal tod3. -
Lines 22–25: We print the results to the console.
RELATED TAGS
c#
equal
double
communitycreator
CONTRIBUTOR
Theodore Kelechukwu OnyejiakuRELATED COURSES
View all Courses
Keep Exploring
Related Courses
