Write a function dispense_bills(). The function determines the minimum number of bills to dispense given a withdrawal amount. The possible bills dispensed include: 100’s, 50’s, 20’s, and 10’s. The number of each bill to dispense should be stored indirectly through the pointers: hundreds_ptr, fifties_ptr, twenties_ptr, and tens_ptr. If the withdrawal_amount exceeds the balance, then the number of each bill to dispense should be set to 0, and 0 should be returned. If the withdrawal_amount is less than or equal to the balance, then the number of each bill to dispense should be calculated, and 1 should be returned. The function header has been provided for you.