Factorial Using While Loop
This program calculates factorial of a number using while loop.
Problem Statement
Write a Java program that calculates factorial of 5 using while loop.
Source Code
| 1 | public class FactorialWhile { |
| 2 | public static void main(String[] args) { |
| 3 | int num = 5, fact = 1, i = 1; |
| 4 | while(i <= num) { |
| 5 | fact *= i; |
| 6 | i++; |
| 7 | } |
| 8 | System.out.println("Factorial of " + num + " = " + fact + " - Eduinq"); |
| 9 | } |
| 10 | } |
Program Output
Factorial of 5 = 120 - Eduinq
Explanation
The program initializes fact=1 and i=1. The while loop multiplies fact by i until i exceeds num. This demonstrates how while loops can calculate factorials. Shows how while loop can calculate factorial.