Write a Java program to print Factorial Number Using do While Loop ?

Write a Java program to print Factorial Number Using do While Loop

class Main
{
    public static void main(String args[])
    {
        int x=1,n=5,fact=1;
        do
        {  
           fact=fact*x;  
           x++;
        }while(x<=n);
        System.out.print(n+" Factorial is "+fact);
    }
}	
                                            

5 Factorial is 120

Using commandLine arguments

class Main
{
    public static void main(String args[])
    {
        int x=1,n,fact=1;
        n=Integer.parseInt(args[0]);
        do
        {  
           fact=fact*x;  
           x++;
        }while(x<=n);
        System.out.print(n+" Factorial is "+fact);
    }
}
                                            

5 Factorial is 120

Using Scanner class

import java.util.*;
class Main
{
    public static void main(String args[])
    {
        int x=1,n,fact=1;
        Scanner s=new Scanner(System.in);
        System.out.println("Enter n value");
        n=s.nextInt();
        do
        {  
           fact=fact*x;  
           x++;
        }while(x<=n);
       System.out.print(n+" Factorial is "+fact);
}
}
                                            

Enter n value 5
5 Factorial is 120

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