Program to Find the sum of series 1/1!+1/2!+1/3!.....+1/N!

 Problem statement:- Program to Find the sum of series 1/1!+1/2!+1/3!+1/4!.....+1/N!.

 Data requirement:-

   Input Data:- n

  Output Data:-Sum

  Additional Data:- i, fact

Program in C
  
Here is the source code of the C Program to Find the sum of series 1/1!+1/2!+1/3!+1/4!.....+1/N!.

Code:

#include<stdio.h>
int main()
{
    int n,i,fact=1;
    double sum=0.0;
    printf("Enter the range of number:");
    scanf("%d",&n);

    for(i=1;i<=n;i++)
    {
    fact*=i;
     sum+=1.0/(double)fact;
    }

    printf("The sum of the series = %0.2lf",sum);
}

Input/Output:
Enter the range of number:5
The sum of the series = 1.72

Program in C++

Here is the source code of the C++ Program to Find the sum of series 1/1!+1/2!+1/3!+1/4!.....+1/N!.

Code:

#include<iostream>
using namespace std;
int main()
{
    int n,i,fact=1;
    double sum=0.0;
    cout<<"Enter the range of number:";
    cin>>n;

    for(i=1;i<=n;i++)
    {
    fact*=i;
     sum+=1.0/(double)fact;
    }
    cout<<"The sum of the series = "<<sum;
}

Input/Output:
Enter the range of number:8
The sum of the series = 1.71828

Program in Java

Here is the source code of the Java Program to Find the sum of series 1/1!+1/2!+1/3!+1/4!.....+1/N!.

Code:

import java.util.Scanner;
public class Sum_Of_Series7 {

public static void main(String[] args) {
Scanner cs=new Scanner(System.in);
     int n,i,fact=1;
     double sum=0.0;
     System.out.println("Enter the range of number:");
     n=cs.nextInt();
     for(i=1;i<=n;i++)
     {
     fact*=i;
     sum+=1.0/(double)fact;
     }
     System.out.println("The sum of the series = "+sum);
     cs.close();
}
}

Input/Output:
Enter the range of number:
10
The sum of the series = 1.7182818011463847

Program in Python

Here is the source code of the Python Program to Find the sum of series 1/1!+1/2!+1/3!+1/4!.....+1/N!.

Code:

n=int(input("Enter the range of number:"))
sum=0.0
fact=1
for i in range(1,n+1):
    fact *= i
    sum+=1.0/fact
print("The sum of the series = ",sum)

Input/Output:
Enter the range of number:15
The sum of the series =  1.7182818284589947


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