ENGR 221
Fall Semester 2007
Homework Assignment 3
Due Thursday, September 20, 2007
Write a C program, hwk3.c, to perform math operations on integer values. Allow the
user to select from the following menu options:
1 – sum of integers
2 – product of integers
3 – sum of powers of integers
Depending on the selection made by the user, perform the desired operation. The
program should work for all integers.
Sample output is given below.
This program performs math operations.
Enter a number 1 to 3 corresponding to the following options:
1 -- sum of integers
2 -- product of integers
3 -- sum of powers of integers
1
Enter the starting integer:
1
Enter the desired increment between integers:
1
Enter the ending integer:
7
The sum of integers between 1 and 7 incremented by 1 is 28.
[user@students homework]$ ./a.out
This program performs math operations.
Enter a number 1 to 3 corresponding to the following options:
1 -- sum of integers
2 -- product of integers
3 -- sum of powers of integers
2
Enter the starting integer:
2
Enter the desired increment between integers:
2
Enter the ending integer:
8
The product of integers between 2 and 8 incremented by 2 is 384.
[user@students homework]$ ./a.out
This program performs math operations.
Enter a number 1 to 3 corresponding to the following options:
1 -- sum of integers
2 -- product of integers
3 -- sum of powers of integers
3
Enter an integer:
4
Enter a starting power:
0
Enter an increment for power:
1
Enter an ending power:
5
The sum of powers of the integer 4 with the powers starting at 0, incremented by 1, and ending at 5 is 1365.
[user@students homework]$ ./a.out
This program performs math operations.
Enter a number 1 to 3 corresponding to the following options:
1 -- sum of integers
2 -- product of integers
3 -- sum of powers of integers
4
Enter a number 1 to 3 corresponding to the following options:
1 -- sum of integers
2 -- product of integers
3 -- sum of powers of integers
If the user does not enter 1,2, or 3, the program must print the menu again as shown
above.
Use an infinite while loop in conjunction with break and continue to
accomplish this. Incorporate a switch statement with default clause as well as a do/while
statement in your program. The program must not allow division by zero. Save your
program as hwk3.c in your homework directory. Include your name and hwk3.c in
comment lines at the top. Print out a copy of the program with sample output and add a
flowchart on the same page. Turn this in for grading.
Email a completed copy of your program to both the instructor and the grader prior to
the start of class on the due date. In the subject line of this email, type ENGR 221
hwk3.c. Send it as an attachment from your IPFW webmail account, which can be
accessed through https://my.ipfw.edu/. If you are working from home or a campus lab
other than the engineering labs, you can access the file by logging into
http://students.etcs.ipfw.edu and transferring it from your homework directory to the
local computer. Once the file is on the local computer, you can attach it to an email. In
class, turn in a hardcopy of the program with your results appended at the bottom and
with the flowchart. Make sure the version you email does not have these appended
results because it will not compile.
Grading:
Program written correctly & results accurate
Comments and style
Program compiles
Flowchart
4 pts.
2 pts.
2 pts.
2 pts.
10 pts.