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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(); while(n<0) { System.out.println("Enter n value again"); n=s.nextInt(); } while(x<=n) { fact=fact*x; x++; } System.out.print(fact); } }
import java.util.*; class Main { public static void main(String args[]) { char ch; Scanner s=new Scanner(System.in); System.out.println("Enter ch value"); ch=s.next().charAt(0); while(ch>='a' && ch<='z') { System.out.println("Enter ch value again"); ch=s.next().charAt(0); } if(ch=='a' ||ch=='e' ||ch=='i' ||ch=='o' ||ch=='u') { System.out.println("Vowel"); } else { System.out.println("Consonant"); } } }