public static void vendingMachine(char a, int n){
		int price = 0;
		
		if(a == 'w' || a == 'W') {
			price = 10;
			checkPayment(price, n, a);
			
		} else if (a == 'j' || a == 'J') {
			price = 15;
			checkPayment(price, n, a);
			
		} else if ( a == 'c' || a == 'C') {
			price = 12;
			checkPayment(price, n, a);
			
		} else {
			System.out.println("Wrong input");
		}
	}