factorial_2_4_4.java

//problem 2.4.3 // factorial_2_4_3.java: write a program tha takes an integer n and calculate n!  import java.util.Scanner; class factorial_2_4_4 { public static void main(String args[]) { Scanner sc = new Scanner(System.in); int num = sc.nextInt(); int fact = 1; if(num<1) System.out.println("Enter a valid number..."); else if(num == 1) System.out.println("Factorial value of "+num+" 1"); else { while(num>0) { fact = fact*num; num--; } } System.out.println("factorial value if"+fact); } }