Question

can anyone help with this Java program...pls​

Answer 1

Answer:

import java.util.*;

class series

{

public void main()

{

Scanner sc=new Scanner(System.in);

System.out.println("Enter the limit");

int n=sc.nextInt();

double S=0.0;

int p=1;

for(int i=1;i<=n;i++)

{

for(int j=1;j<=i;j++)

{

p=p*j;

}

S=S+(1.0/p);

}

System.out.println("Sum="+S);

}

}

Explanation:

We have to start with the factorial of the number .

Run two loops and the inner loop should calculate the factorial .

If we do not keep the datatype of S in double , the printing will be 0 always .

Implicit typecasting will take place from int to double .