[팩토리얼]

 

Scanner sc = new Scanner(System.in);
	    System.out.print("입력 :");
	    int input = sc. nextInt();
	    
	    int k=1;
	    for(int i=1; i<=input ;i++) {	  	
			k*=i ;			
		}
	    System.out.print("출력"+k);