我正在嘗試創建一個程式，該程式輸入價格和稅率，并以有序的格式回傳商品編號、價格、稅率和商品價格。以下是標準：
- 用戶可以輸入多個專案，直到用戶另有說明。
- 它計算并在底部顯示購買物品的總量。
- 總金額1000以上可享受3折優惠
我不允許使用陣列來解決這個問題，我必須將輸入與螢屏上的輸出分開。
此處顯示了示例輸出：
Enter the price: 245.78
Enter the tax rate: 12
Are there any more items? (y/n) y
Enter the price: 34
Enter the tax rate: 10
Are there any more items? (y/n) y
Enter the price: 105.45
Enter the tax rate: 7
Are there any more items? (y/n) n
Item Price Tax Rate % Item Price
====================================
1 245.78 12% 275.27
2 34.00 10% 37.40
3 105.45 7% 112.83
Total amount: $425.51
到目前為止，這是我的代碼：
price= float(input('Enter the price: '))
taxRate= float(input('Enter the tax rate: '))
itemPrice = price * (1 taxRate/100)
acc= 0
while True:
query=input('Are there any more items? (y/n)')
if query== 'y':
price= float(input('Enter the price: '))
taxRate= float(input('Enter the tax rate: '))
itemPrice = price * (1 taxRate/100)
print(itemPrice )
acc =1
elif query=='n':
break
print ("Item Price Tax Rate% Item Price")
print ("=========================================")
print( (acc 1) , format(price,'10.2f'), format(taxRate,'10.2f') ,
format(itemPrice,'14.2f') )
for num in range(0,acc):
print (acc, price, taxRate, itemPrice)
輸出如下所示：
Enter the price: 245.78
Enter the tax rate: 12
Are there any more items? (y/n)y
Enter the price: 34
Enter the tax rate: 10
37.400000000000006
Are there any more items? (y/n)y
Enter the price: 105.45
Enter the tax rate: 7
112.8315
Are there any more items? (y/n)n
Item Price Tax Rate% Item Price
=========================================
3 105.45 7.00 112.83
2 105.45 7.0 112.8315
2 105.45 7.0 112.8315
我只是很難在不使用陣列的情況下嘗試做到這一點..有人可以提供幫助嗎？
uj5u.com熱心網友回復：
您可以構建一個字串作為輸出的緩沖區嗎？
像這樣：
out = ""
acc = 0
totalAmount = 0
query = 'y'
while query == 'y':
price = float(input('Enter the price: '))
taxRate = float(input('Enter the tax rate: '))
itemPrice = price * (1 taxRate/100)
acc = 1
totalAmount = itemPrice
out = f"{acc:>4} {price:9.2f} {taxRate:11.2f}% {itemPrice:13.2f}\n"
query = input('Are there any more items? (y/n) ')
print("Item Price Tax Rate% Item Price")
print("=========================================")
print(out)
print(f"Total amount: ${totalAmount:.2f}")
if totalAmount >= 1000:
print(" Discount: 3%")
print(f"Total amount: ${totalAmount*0.97:.2f} (after discount)")
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