An integer (never a fraction) that can be divided exactly by 2. For example, 10 is an even number, i.e., 10 % 2 = 0.
Note: % is a Modulus (Division Remainder) operator, it finds the remainder after division of one number by another. Please check our Arithmetic Operators for more details.
In the following example, we will find all the Even Numbers between 10 and 25 using for loop.
Example
C# Compiler
using System;
namespace myApp
{
class Program
{
static void Main(string[] args)
{
int start =10;
int end =25;
Console.WriteLine("Even numbers between {0} and {1}: ", start, end);
for(start=start; start<=end; start++)
{
if(start %2==0)
Console.Write(start +" ");
}
}
}
}
Output
Even numbers between 10 and 25:
10 12 14 16 18 20 22 24
Using While Loop
In the following example, we will find all the Even Numbers between 10 and 25 using while loop.
Example
C# Compiler
using System;
namespace myApp
{
class Program
{
static void Main(string[] args)
{
int start =10;
int end =25;
Console.WriteLine("Even numbers between {0} and {1}: ", start, end);
while(start <= end)
{
if(start %2==0)
Console.Write(start +" ");
start++;
}
}
}
}
Output
Even numbers between 10 and 25:
10 12 14 16 18 20 22 24
Using do while Loop
In the following example, we will find all the Even Numbers between 10 and 25 using do while loop.
Example
C# Compiler
using System;
namespace myApp
{
class Program
{
static void Main(string[] args)
{
int start =10;
int end =25;
Console.WriteLine("Even numbers between {0} and {1}: ", start, end);
do{
if(start %2==0)
Console.Write(start +" ");
start++;
}while(start <= end);
}
}
}
Output
Even numbers between 10 and 25:
10 12 14 16 18 20 22 24
Even Numbers between any Given Range
In the following example, we will find all the Even numbers between any given range.
Example
C# Compiler
using System;
namespace myApp
{
class Program
{
static void Main(string[] args)
{
Console.Write("Enter a (int) starting number: ");
int start = Convert.ToInt32(Console.ReadLine());
Console.Write("Enter an (int) ending number: ");
int end = Convert.ToInt32(Console.ReadLine());
Console.WriteLine("\nEven numbers between {0} and {1}: ", start, end);
for(start=start; start<=end; start++)
{
if(start %2==0)
Console.Write(start +" ");
}
}
}
}
Output
Enter a (int) starting number: 2
Enter an (int) ending number: 10
Even numbers between 2 and 10:
2 4 6 8 10
Check Whether the Given Number is Even or Odd
In the following example, we will check whether the given number is an Even number or Odd number.
Example
C# Compiler
using System;
namespace myApp
{
class Program
{
static void Main(string[] args)
{
Console.Write("Enter a (int) number: ");
int num = Convert.ToInt32(Console.ReadLine());
if(num %2==0)
Console.Write("{0} is an even number", num);
else
Console.Write("{0} is an odd number", num);
}
}
}
Output
Enter a (int) number: 2
2 is an even number
Reminder
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