Question

Write the program in Java to find the sum of the following series:

S = 1 + 1 + 2 + 3 + 5 + ...................... to n terms

Answer 1

import java.util.*; 
public class Q2a 
{ public static void main(String args[]) 
{
Scanner obj = new Scanner(System.in); 
int a = 0, b = 1, c = 0, sum = 0, n; 
System.out.printin("FIBONACCI SERIES"); 
System.out.printin("Enter the value of n....that is, the number of terms"); 
n = obj.nextInt(); 
System.out.print(a + "," + b + ",");
sum = a + b; 
for (int i = 1; i <= (n - 2); i++) // n-2 since 2 terms are printed outside loop |
{ c = a + b; : 
System.out.print(c + ","); 
sum += c; 
a = b; 
b = c; 
} 
System.out.println("\n Sum of the above series = " + sum); 
}}