validation loop trouble

[reese959599]

The problem I am getting now is that I can input random things the 1st time and it works right but on the 2nd try it will take wrong inputs. EX: 1st input chess, it will say try again. 2nd input chess it will accept chess and open checking then put the h into deposit amount causing an error try again

cout << "Checking (C) or Savings (S): enter your choice" << endl;
		cin.get(choice);

		//input validation
		while(choice != 'c' && choice != 'C' && choice != 's' && choice != 'S')
			{
		cin.clear();
		cin.ignore(100, '\n');
		cout << "Invalid input.  Try again: ";
		cin.get(choice);
		}
		
		//deposit in checking
	if (choice == 'c' || choice == 'C')
		{
			cout << "how much are you depositing: $" << endl; //get deposit
			cin >> deposit;

			while(!(cin >> deposit)) //make sure user input is valid
			{
		cin.clear();
		cin.ignore(numeric_limits<streamsize>::max(),'\n');
		cout << "Invalid input.  Try again: ";
		}
			
			if (deposit <= 0)
				cout << "error: you cannot enter a negative or 0 amount" << endl;
			else if (deposit > 0)
				cout << "new checking balance: $" << checking + deposit << endl;	
			else
				cout << "error program terminated" << endl;
		}