Write a Java-program to print Factorial Number using while loop ?
Write a Java-program to print Factorial Number using while loop ?
Write a Java-program to print Factorial Number using while loop ?
Program
public class Main
{
public static void main(String args[])
{
int x=1,n=5,fact=1;
while(x<=n)
{
fact=fact*x;
x++;
}
System.out.println(n+" Factorial is: "+fact);
}
}
Output:
5 Factorial is: 120
Using CommandLine Arguments
public class Main
{
public static void main(String args[])
{
int x=1,n,fact=1;
n=Integer.parseInt(args[0]);
while(x<=n)
{
fact=fact*x;
x++;
}
System.out.println(n+" Factorial is: "+fact);
}
}
Output:
5 Factorial is: 120
Using Scanner Class
import java.util.*;
public 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();
while(x<=n)
{
fact=fact*x;
x++;
}
System.out.println(n+" Factorial is: "+fact);
}
}
Output:
Enter n value : 5
5 Factorial is: 120
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