Download Midterm of Program Design (1)

Midterm of Program Design (I)
2008/11/17
1. (15%) Write a program that reads a sequence of integers until a negative one being
reached. The program then displays the minimum, the maximum and the average
(in double) of the positive integers. (MinMaxAvg.c)
Example of screen output
Enter positive integers (-1 to end) : 15 11 3 -1
The maximum is 15
The minimum is 3
Their average is 9.66
2. (15%) Write a program that inputs a number, separates the number into its
individual digits and prints the digits backward separated from one
another.(ListDigitBackward.c)
Example of screen output
Input a number: 123456789
9 8 7 6 5 4 3 2 1
3. (15%) The following table shows telephone area codes in the state of Georgia
along with the largest city in each area:
Area code
Major city
229
Albany
404
Atlanta
470
Atlanta
478
Macon
678
Atlanta
706
Columbus
762
Columbus
770
Atlanta
912
Savannah
Write a program (AreaCode.c) with a switch statement whose controlling
expression is the variable area_code. If the value of area_code is in the
table, the switch statement will print the corresponding city name. Otherwise,
the switch statement will display the message “Area code not recognized”.
Be sure to make the switch statement as simple as possible.
4. (25%) Write a program that uses scanf to read two integers M (1  M  15) and
N (1  N  10), and prints an M  N table such that the mth row and the nth column
of the table contains the value of m  2n1.
Example of screen output
Enter M : 6
Enter N : 4
m*2^0 m*2^1 m*2^2 m*2^3 m*2^4
1
2
4
8
16
2
4
8
16
32
3
6
12
24
48
4
8
16
32
64
5
10
20
40
80
6
12
24
48
96
5. (30%) A mail order house sells five different products whose retail prices are
shown in the following table :
Product number
1
2
3
4
5
Retail price
$ 2.98
$ 4.50
$ 9.98
$ 4.49
$ 6.87
Write a program (Accounting.c) that reads a series of pairs of numbers as follows :
a) Product number
b) Quantity sold for one day
Your program should calculate and display the total retail value of all products.
Example of screen output
Enter pairs of item numbers and quantities.
Enter -1 for the item number to end input.
1 1
2 2
3 1
4 1
5 1
6 1
Invalid product code :
Quantity : 1
1 1
6
-1
The total retail value was:
$36.30