# Find the sum of geometric series

Here given code implementation process.

```
// C program
// Find the sum of geometric series
#include <stdio.h>
#include <math.h>
// Sum of geometric progression series
// a : starting point
// ratio : common ratio
// n : number of element
void sum_gp_element(double a, double ratio, int n)
{
printf("\n [ Start : %lf, Ratio : %lf, N : %d ] ", a, ratio, n);
//Calcuate sum
double sum = (a * (1 - (pow(ratio, n)))) / (1 - ratio);
printf("\n Sum : %lf\n", sum);
}
// Driver code
int main()
{
// Test Cases
sum_gp_element(6, 2, 6);
sum_gp_element(4, 3, 7);
sum_gp_element(4.3, 3, 3);
return 0;
}
//compile the code like this
// compile : gcc -o a test.c -1m
// here test.c is program file
// run : ./a.out
```

#### Output

```
[ Start : 6.000000, Ratio : 2.000000, N : 6 ]
Sum : 378.000000
[ Start : 4.000000, Ratio : 3.000000, N : 7 ]
Sum : 4372.000000
[ Start : 4.300000, Ratio : 3.000000, N : 3 ]
Sum : 55.900000
```

```
// Java program
// Find the sum of geometric series
class MyMath
{
// Sum of geometric progression series
// Here
// a : starting point
// ratio : common ratio
// n : number of element
public void sum_gp_element(double a, double ratio, int n)
{
System.out.print("\n [ Start : " + a + ", Ratio : " + ratio + ", N : " + n + " ] ");
//Calcuate sum
double sum = (a * (1 - (Math.pow(ratio, n)))) / (1 - ratio);
System.out.print("\n Sum : " + sum + "\n");
}
public static void main(String[] args)
{
MyMath obj = new MyMath();
// Test Cases
obj.sum_gp_element(6, 2, 6);
obj.sum_gp_element(4, 3, 7);
obj.sum_gp_element(4.3, 3, 3);
}
}
```

#### Output

```
[ Start : 6.0, Ratio : 2.0, N : 6 ]
Sum : 378.0
[ Start : 4.0, Ratio : 3.0, N : 7 ]
Sum : 4372.0
[ Start : 4.3, Ratio : 3.0, N : 3 ]
Sum : 55.9
```

```
//Include header file
#include <iostream>
#include<math.h>
using namespace std;
// C++ program
// Find the sum of geometric series
class MyMath
{
public:
// Sum of geometric progression series
// Here
// a : starting point
// ratio : common ratio
// n : number of element
void sum_gp_element(double a, double ratio, int n)
{
cout << "\n [ Start : " << a << ", Ratio : " << ratio << ", N : " << n << " ] ";
//Calcuate sum
double sum = (a * (1 - (pow(ratio, n)))) / (1 - ratio);
cout << "\n Sum : " << sum << "\n";
}
};
int main()
{
MyMath obj = MyMath();
// Test Cases
obj.sum_gp_element(6, 2, 6);
obj.sum_gp_element(4, 3, 7);
obj.sum_gp_element(4.3, 3, 3);
return 0;
}
```

#### Output

```
[ Start : 6, Ratio : 2, N : 6 ]
Sum : 378
[ Start : 4, Ratio : 3, N : 7 ]
Sum : 4372
[ Start : 4.3, Ratio : 3, N : 3 ]
Sum : 55.9
```

```
//Include namespace system
using System;
// C# program
// Find the sum of geometric series
class MyMath
{
// Sum of geometric progression series
// Here
// a : starting point
// ratio : common ratio
// n : number of element
public void sum_gp_element(double a, double ratio, int n)
{
Console.Write("\n [ Start : " + a + ", Ratio : " + ratio + ", N : " + n + " ] ");
//Calcuate sum
double sum = (a * (1 - (Math.Pow(ratio, n)))) / (1 - ratio);
Console.Write("\n Sum : " + sum + "\n");
}
public static void Main(String[] args)
{
MyMath obj = new MyMath();
// Test Cases
obj.sum_gp_element(6, 2, 6);
obj.sum_gp_element(4, 3, 7);
obj.sum_gp_element(4.3, 3, 3);
}
}
```

#### Output

```
[ Start : 6, Ratio : 2, N : 6 ]
Sum : 378
[ Start : 4, Ratio : 3, N : 7 ]
Sum : 4372
[ Start : 4.3, Ratio : 3, N : 3 ]
Sum : 55.9
```

```
<?php
// Php program
// Find the sum of geometric series
class MyMath
{
// Sum of geometric progression series
// Here
// a : starting point
// ratio : common ratio
// n : number of element
public function sum_gp_element($a, $ratio, $n)
{
echo "\n [ Start : ". $a .", Ratio : ". $ratio .", N : ". $n ." ] ";
//Calcuate sum
$sum = ($a * (1 - (pow($ratio, $n)))) / (1 - $ratio);
echo "\n Sum : ". $sum ."\n";
}
}
function main()
{
$obj = new MyMath();
// Test Cases
$obj->sum_gp_element(6, 2, 6);
$obj->sum_gp_element(4, 3, 7);
$obj->sum_gp_element(4.3, 3, 3);
}
main();
```

#### Output

```
[ Start : 6, Ratio : 2, N : 6 ]
Sum : 378
[ Start : 4, Ratio : 3, N : 7 ]
Sum : 4372
[ Start : 4.3, Ratio : 3, N : 3 ]
Sum : 55.9
```

```
// Node Js program
// Find the sum of geometric series
class MyMath
{
// Sum of geometric progression series
// Here
// a : starting point
// ratio : common ratio
// n : number of element
sum_gp_element(a, ratio, n)
{
process.stdout.write("\n [ Start : " + a + ", Ratio : " + ratio + ", N : " + n + " ] ");
//Calcuate sum
var sum = (a * (1 - (Math.pow(ratio, n)))) / (1 - ratio);
process.stdout.write("\n Sum : " + sum + "\n");
}
}
function main()
{
var obj = new MyMath();
// Test Cases
obj.sum_gp_element(6, 2, 6);
obj.sum_gp_element(4, 3, 7);
obj.sum_gp_element(4.3, 3, 3);
}
main();
```

#### Output

```
[ Start : 6, Ratio : 2, N : 6 ]
Sum : 378
[ Start : 4, Ratio : 3, N : 7 ]
Sum : 4372
[ Start : 4.3, Ratio : 3, N : 3 ]
Sum : 55.9
```

```
# Python 3 program
# Find the sum of geometric series
class MyMath :
# Sum of geometric progression series
# Here
# a : starting point
# ratio : common ratio
# n : number of element
def sum_gp_element(self, a, ratio, n) :
print("\n [ Start : ", a ,", Ratio : ", ratio ,", N : ", n ," ] ", end = "")
# Calcuate sum
sum = (a * (1 - ((ratio**n)))) / (1 - ratio)
print("\n Sum : ", sum ,"\n", end = "")
def main() :
obj = MyMath()
# Test Cases
obj.sum_gp_element(6, 2, 6)
obj.sum_gp_element(4, 3, 7)
obj.sum_gp_element(4.3, 3, 3)
if __name__ == "__main__": main()
```

#### Output

```
[ Start : 6 , Ratio : 2 , N : 6 ]
Sum : 378.0
[ Start : 4 , Ratio : 3 , N : 7 ]
Sum : 4372.0
[ Start : 4.3 , Ratio : 3 , N : 3 ]
Sum : 55.9
```

```
# Ruby program
# Find the sum of geometric series
class MyMath
# Sum of geometric progression series
# Here
# a : starting point
# ratio : common ratio
# n : number of element
def sum_gp_element(a, ratio, n)
print("\n [ Start : ", a ,", Ratio : ", ratio ,", N : ", n ," ] ")
# Calcuate sum
sum = (a * (1 - (ratio**n))) / (1 - ratio)
print("\n Sum : ", sum ,"\n")
end
end
def main()
obj = MyMath.new()
# Test Cases
obj.sum_gp_element(6, 2, 6)
obj.sum_gp_element(4, 3, 7)
obj.sum_gp_element(4.3, 3, 3)
end
main()
```

#### Output

```
[ Start : 6, Ratio : 2, N : 6 ]
Sum : 378
[ Start : 4, Ratio : 3, N : 7 ]
Sum : 4372
[ Start : 4.3, Ratio : 3, N : 3 ]
Sum : 55.9
```

```
// Scala program
// Find the sum of geometric series
class MyMath
{
// Sum of geometric progression series
// Here
// a : starting point
// ratio : common ratio
// n : number of element
def sum_gp_element(a: Double, ratio: Double, n: Int): Unit = {
print("\n [ Start : " + a + ", Ratio : " + ratio + ", N : " + n + " ] ");
//Calcuate sum
var sum: Double = a * (1 - (Math.pow(ratio, n))) / (1 - ratio);
print("\n Sum : " + sum + "\n");
}
}
object Main
{
def main(args: Array[String]): Unit = {
var obj: MyMath = new MyMath();
// Test Cases
obj.sum_gp_element(6, 2, 6);
obj.sum_gp_element(4, 3, 7);
obj.sum_gp_element(4.3, 3, 3);
}
}
```

#### Output

```
[ Start : 6.0, Ratio : 2.0, N : 6 ]
Sum : 378.0
[ Start : 4.0, Ratio : 3.0, N : 7 ]
Sum : 4372.0
[ Start : 4.3, Ratio : 3.0, N : 3 ]
Sum : 55.9
```

```
import Foundation
// Swift program
// Find the sum of geometric series
class MyMath
{
// Sum of geometric progression series
// Here
// a : starting point
// ratio : common ratio
// n : number of element
func sum_gp_element(_ a: Double, _ ratio: Double, _ n: Int)
{
print("\n [ Start : ", a ,", Ratio : ", ratio ,", N : ", n ," ] ", terminator: "");
//Calcuate sum
let sum: Double = (a * (1 - (pow(ratio, Double(n))))) / (1 - ratio);
print("\n Sum : ", sum ,"\n", terminator: "");
}
}
func main()
{
let obj: MyMath = MyMath();
// Test Cases
obj.sum_gp_element(6, 2, 6);
obj.sum_gp_element(4, 3, 7);
obj.sum_gp_element(4.3, 3, 3);
}
main();
```

#### Output

```
[ Start : 6.0 , Ratio : 2.0 , N : 6 ]
Sum : 378.0
[ Start : 4.0 , Ratio : 3.0 , N : 7 ]
Sum : 4372.0
[ Start : 4.3 , Ratio : 3.0 , N : 3 ]
Sum : 55.9
```

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