# Sum of initial N Even natural numbers

Here given code implementation process.

```
/*
C program for
Sum of initial N Even natural numbers
*/
#include <stdio.h>
void sumOfEven(int n)
{
int result = n *(n + 1);
// Display calculated result
printf(" Sum of %d Even natural numbers is : %d \n", n, result);
}
int main(int argc, char const *argv[])
{
/*
Test A
n = 10
(2) + (4) + (6) + (8) + (10) +
(12) + (14) + (16) + (18) + (20)
----------------------------------------
Result = 110
*/
sumOfEven(10);
/*
Test B
n = 7
(2) + (4) + (6) + (8) + (10) + (12) + (14)
----------------------------------------
Result = 56
*/
sumOfEven(7);
return 0;
}
```

#### Output

```
Sum of 10 Even natural numbers is : 110
Sum of 7 Even natural numbers is : 56
```

```
/*
Java program for
Sum of initial N Even natural numbers
*/
public class NaturalNumbers
{
public void sumOfEven(int n)
{
int result = n * (n + 1);
// Display calculated result
System.out.print("\n Sum of " +
n + " Even natural numbers is : " +
result);
}
public static void main(String[] args)
{
NaturalNumbers task = new NaturalNumbers();
/*
Test A
n = 10
(2) + (4) + (6) + (8) + (10) +
(12) + (14) + (16) + (18) + (20)
----------------------------------------
Result = 110
*/
task.sumOfEven(10);
/*
Test B
n = 7
(2) + (4) + (6) + (8) + (10) + (12) + (14)
----------------------------------------
Result = 56
*/
task.sumOfEven(7);
}
}
```

#### Output

```
Sum of 10 Even natural numbers is : 110
Sum of 7 Even natural numbers is : 56
```

```
// Include header file
#include <iostream>
using namespace std;
/*
C++ program for
Sum of initial N Even natural numbers
*/
class NaturalNumbers
{
public: void sumOfEven(int n)
{
int result = n *(n + 1);
// Display calculated result
cout << "\n Sum of " << n
<< " Even natural numbers is : "
<< result;
}
};
int main()
{
NaturalNumbers *task = new NaturalNumbers();
/*
Test A
n = 10
(2) + (4) + (6) + (8) + (10) +
(12) + (14) + (16) + (18) + (20)
----------------------------------------
Result = 110
*/
task->sumOfEven(10);
/*
Test B
n = 7
(2) + (4) + (6) + (8) + (10) + (12) + (14)
----------------------------------------
Result = 56
*/
task->sumOfEven(7);
return 0;
}
```

#### Output

```
Sum of 10 Even natural numbers is : 110
Sum of 7 Even natural numbers is : 56
```

```
// Include namespace system
using System;
/*
Csharp program for
Sum of initial N Even natural numbers
*/
public class NaturalNumbers
{
public void sumOfEven(int n)
{
int result = n * (n + 1);
// Display calculated result
Console.Write("\n Sum of " +
n + " Even natural numbers is : " +
result);
}
public static void Main(String[] args)
{
NaturalNumbers task = new NaturalNumbers();
/*
Test A
n = 10
(2) + (4) + (6) + (8) + (10) +
(12) + (14) + (16) + (18) + (20)
----------------------------------------
Result = 110
*/
task.sumOfEven(10);
/*
Test B
n = 7
(2) + (4) + (6) + (8) + (10) + (12) + (14)
----------------------------------------
Result = 56
*/
task.sumOfEven(7);
}
}
```

#### Output

```
Sum of 10 Even natural numbers is : 110
Sum of 7 Even natural numbers is : 56
```

```
package main
import "fmt"
/*
Go program for
Sum of initial N Even natural numbers
*/
func sumOfEven(n int) {
var result int = n * (n + 1)
// Display calculated result
fmt.Print("\n Sum of ", n, " Even natural numbers is : ", result)
}
func main() {
/*
Test A
n = 10
(2) + (4) + (6) + (8) + (10) +
(12) + (14) + (16) + (18) + (20)
----------------------------------------
Result = 110
*/
sumOfEven(10)
/*
Test B
n = 7
(2) + (4) + (6) + (8) + (10) + (12) + (14)
----------------------------------------
Result = 56
*/
sumOfEven(7)
}
```

#### Output

```
Sum of 10 Even natural numbers is : 110
Sum of 7 Even natural numbers is : 56
```

```
<?php
/*
Php program for
Sum of initial N Even natural numbers
*/
class NaturalNumbers
{
public function sumOfEven($n)
{
$result = $n * ($n + 1);
// Display calculated result
echo("\n Sum of ".$n.
" Even natural numbers is : ".$result);
}
}
function main()
{
$task = new NaturalNumbers();
/*
Test A
n = 10
(2) + (4) + (6) + (8) + (10) +
(12) + (14) + (16) + (18) + (20)
----------------------------------------
Result = 110
*/
$task->sumOfEven(10);
/*
Test B
n = 7
(2) + (4) + (6) + (8) + (10) + (12) + (14)
----------------------------------------
Result = 56
*/
$task->sumOfEven(7);
}
main();
```

#### Output

```
Sum of 10 Even natural numbers is : 110
Sum of 7 Even natural numbers is : 56
```

```
/*
Node JS program for
Sum of initial N Even natural numbers
*/
class NaturalNumbers
{
sumOfEven(n)
{
var result = n * (n + 1);
// Display calculated result
process.stdout.write("\n Sum of " +
n + " Even natural numbers is : " +
result);
}
}
function main()
{
var task = new NaturalNumbers();
/*
Test A
n = 10
(2) + (4) + (6) + (8) + (10) +
(12) + (14) + (16) + (18) + (20)
----------------------------------------
Result = 110
*/
task.sumOfEven(10);
/*
Test B
n = 7
(2) + (4) + (6) + (8) + (10) + (12) + (14)
----------------------------------------
Result = 56
*/
task.sumOfEven(7);
}
main();
```

#### Output

```
Sum of 10 Even natural numbers is : 110
Sum of 7 Even natural numbers is : 56
```

```
# Python 3 program for
# Sum of initial N Even natural numbers
class NaturalNumbers :
def sumOfEven(self, n) :
result = n * (n + 1)
# Display calculated result
print("\n Sum of", n ,
"Even natural numbers is :",
result, end = "")
def main() :
task = NaturalNumbers()
# Test A
# n = 10
# (2) + (4) + (6) + (8) + (10) +
# (12) + (14) + (16) + (18) + (20)
# ----------------------------------------
# Result = 110
task.sumOfEven(10)
# Test B
# n = 7
# (2) + (4) + (6) + (8) + (10) + (12) + (14)
# ----------------------------------------
# Result = 56
task.sumOfEven(7)
if __name__ == "__main__": main()
```

#### Output

```
Sum of 10 Even natural numbers is : 110
Sum of 7 Even natural numbers is : 56
```

```
# Ruby program for
# Sum of initial N Even natural numbers
class NaturalNumbers
def sumOfEven(n)
result = n * (n + 1)
# Display calculated result
print("\n Sum of ",
n ," Even natural numbers is : ",
result)
end
end
def main()
task = NaturalNumbers.new()
# Test A
# n = 10
# (2) + (4) + (6) + (8) + (10) +
# (12) + (14) + (16) + (18) + (20)
# ----------------------------------------
# Result = 110
task.sumOfEven(10)
# Test B
# n = 7
# (2) + (4) + (6) + (8) + (10) + (12) + (14)
# ----------------------------------------
# Result = 56
task.sumOfEven(7)
end
main()
```

#### Output

```
Sum of 10 Even natural numbers is : 110
Sum of 7 Even natural numbers is : 56
```

```
/*
Scala program for
Sum of initial N Even natural numbers
*/
class NaturalNumbers()
{
def sumOfEven(n: Int): Unit = {
var result: Int = n * (n + 1);
// Display calculated result
print("\n Sum of " +
n + " Even natural numbers is : " + result);
}
}
object Main
{
def main(args: Array[String]): Unit = {
var task: NaturalNumbers = new NaturalNumbers();
/*
Test A
n = 10
(2) + (4) + (6) + (8) + (10) +
(12) + (14) + (16) + (18) + (20)
----------------------------------------
Result = 110
*/
task.sumOfEven(10);
/*
Test B
n = 7
(2) + (4) + (6) + (8) + (10) + (12) + (14)
----------------------------------------
Result = 56
*/
task.sumOfEven(7);
}
}
```

#### Output

```
Sum of 10 Even natural numbers is : 110
Sum of 7 Even natural numbers is : 56
```

```
/*
Swift 4 program for
Sum of initial N Even natural numbers
*/
class NaturalNumbers
{
func sumOfEven(_ n: Int)
{
let result: Int = n * (n + 1);
// Display calculated result
print("\n Sum of", n ,
"Even natural numbers is :",
result, terminator: "");
}
}
func main()
{
let task: NaturalNumbers = NaturalNumbers();
/*
Test A
n = 10
(2) + (4) + (6) + (8) + (10) +
(12) + (14) + (16) + (18) + (20)
----------------------------------------
Result = 110
*/
task.sumOfEven(10);
/*
Test B
n = 7
(2) + (4) + (6) + (8) + (10) + (12) + (14)
----------------------------------------
Result = 56
*/
task.sumOfEven(7);
}
main();
```

#### Output

```
Sum of 10 Even natural numbers is : 110
Sum of 7 Even natural numbers is : 56
```

```
/*
Kotlin program for
Sum of initial N Even natural numbers
*/
class NaturalNumbers
{
fun sumOfEven(n: Int): Unit
{
val result: Int = n * (n + 1);
// Display calculated result
print("\n Sum of " + n +
" Even natural numbers is : " + result);
}
}
fun main(args: Array < String > ): Unit
{
val task: NaturalNumbers = NaturalNumbers();
/*
Test A
n = 10
(2) + (4) + (6) + (8) + (10) +
(12) + (14) + (16) + (18) + (20)
----------------------------------------
Result = 110
*/
task.sumOfEven(10);
/*
Test B
n = 7
(2) + (4) + (6) + (8) + (10) + (12) + (14)
----------------------------------------
Result = 56
*/
task.sumOfEven(7);
}
```

#### Output

```
Sum of 10 Even natural numbers is : 110
Sum of 7 Even natural numbers is : 56
```

Please share your knowledge to improve code and content standard. Also submit your doubts, and test case. We improve by your feedback. We will try to resolve your query as soon as possible.

## New Comment