A water supply company charges the water consumption, as follows:
a) Fixed amount of 10$.
b) For the first 30 cubic meters 0.6$/meter.
c) For the next 20 cubic meters 0.8$/meter.
d) For the next 10 cubic meters 1$/meter.
e) For every additional meter 1.2$/meter.
Write a program that reads the water consumption in cubic meters and displays the bill.
寫一個輸入水的用量 輸出水費的程式
Example Input:
25
Output:
Cost: 25.00
Example Input 2:
44
Output:
Cost: 39.20
Example Input 3:
75
Output:
Cost: 72.00