Factorial Sum with While Loop
This program calculates sum of factorials from 1! to 5! using while loop.
Problem Statement
Write a Java program that calculates sum of factorials from 1! to 5! using while loop.
Source Code
| 1 | public class FactorialSumWhile { |
| 2 | public static void main(String[] args) { |
| 3 | int n = 5, sum = 0, k = 1; |
| 4 | while(k <= n) { |
| 5 | int fact = 1; |
| 6 | for(int i=1; i<=k; i++) { |
| 7 | fact *= i; |
| 8 | } |
| 9 | sum += fact; |
| 10 | k++; |
| 11 | } |
| 12 | System.out.println("Sum of factorials = " + sum + " - Eduinq"); |
| 13 | } |
| 14 | } |
Program Output
Sum of factorials = 153 - Eduinq
Explanation
The while loop iterates numbers 1 to 5, inner for loop calculates factorial, and result is added to sum. Shows how while loop can calculate factorial sum series.