University of Central Florida Flipping Bits Worksheet

Write a C program called bitflip to run on ocelot which will flip bits in an unsigned integer using the binary representation of the number. The user should input the original integer value between 1 and 20000 inclusive on the command line as well as the desired options. Use an unsigned integer type uint16_t. Output is to the screen or to a file. You must use only bitwise operators for this program. You can shift bits and or use the logical bitwise operators.

usage: bitflip [-e] [-f] [-a] [-s] [-o outputfilename] intval

Output the new integer number(s) depending on which options are requested (all aperations done on the original intval). Do not use any break or continue statements other than in the switch.

You should use getopt for this program to identify the options.

The program will always print the starting value on the first line of output and each other value on a new line, clearly identifying it.

If the -e option is selected then flip all even bits.

If the -f option is selected then flip all odd bits.

If the -a option is selected then flip all bits.

If the -s option is selected then take the bits and switch them around from right to left. (The rightmost bit becomes the leftmost bit.

If the -o option is selected then print the output to an output file instead of to the screen.

If an option is included more than once, you can ignore duplicates.

The source file should have your name & Panther ID, a description and it should have the affirmation of originality included in a comment at the top.

[10:13 AM]

Code should be nicely indented and commented.

Create a simple Makefile to compile your program into an executable called bitflip.

A sample of a run of the program could be something like this:

crahn@ocelot:~/ 135% bitflip -s -a -e -f 391

Value: 391

Even bits flipped: 21714

Odd bits flipped: 43821

All bits flipped: 65144

Switched all bits: 57728

Submit your source file and your Makefile in one zip file.