import sys
yougive=input("你投多少錢")
if not yougive.isdecimal():
print("要數字")
sys.exit()
price=input("物品價值")
if not price.isdecimal():
print("要數字")
sys.exit()
change=int(yougive)-int(price)
if change < 0:
print("錢不夠")
sys.exit()
coin=[1000,500,100,50,10,5,1]
for i in coin:
changecoin=change//i
change=change%i
print("你可找回{}元{}個".format(i,changecoin))
#print("你可找回{}元".format(change))
2021年4月20日 星期二
找零計算
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