CSC 117 Programming for Scientists and Engineers

Project 4 Due: Thursday, July 25, 2002 Total points : 25


Please email the program to the grader by midnight on the due date.
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You can use the command:
mail liuq@egr.unlv.edu -s "Project 4" < proj4.f90
where 'proj4.f90' is the name of the file you want to send.

Suppose that a gas company bases its charges on consumption according
to the following table:

 First 70 cubic meters  $5.00 minimum cost
 Next 100 cubic meters  5.0 cents per cubic meter
 Next 230 cubic meters  2.5 cents per cubic meter
Above 400 cubic meters  1.5 cents per cubic meter

Meters readings are four-digit numbers that represent cubic
meters. Write a program in which the meter reading for the previous
month and the current meter reading are entered and then the amount of
the bill is calculated. Note: The current reading may be less than
the previous one; for example, the previous reading may have been
9897, and the current one is 0103. Your output must look like the
sample output shown below.

Sample Output:

Please enter previous and current meter readings:
1000 1500
Cost of gas is   17.25000
Enter 'Q' to quit, any other symbol to continue:
C
Please enter previous and current meter readings:
800 1400
Cost of gas is   18.75000
Enter 'Q' to quit, any other symbol to continue:
Q
Thank you and good-bye