Write a Java program to calculate factorial of a number

Calculate factorial of a number

Sample Output

Calculate factorial of a number.

Enter a number: 5

Factorial of 5 = 120

Java-Source Code

//package loopinjava;
 
import java.util.Scanner;
 
public class Main {
 
    public static void main(String[] args) {
 
        int n, number, fact = 1;
 
        Scanner input = new Scanner(System.in);
 
        System.out.println("Calculate factorial of a number.\n");
 
        System.out.print("Enter a number: ");
        number = input.nextInt();
 
        for (n = 1; n <= number; n++) {
            
            fact = fact * n;
        }
        System.out.print("\nFactorial of " + number + " = " + fact + "\n");
    }
}

Sample Output

Calculate factorial of a number.

Enter a number: 4

Factorial of 4 = 24