CS326-2008F-PRJ-1 Project #-1 – Introduction to C/UNIX 1
PRJ-1 DUE DATE: Monday Sep 8th, 2008 at 11:59pm
You have 10.5 days to work on project 0
You must work as individuals
PRJ-1 is worth 5% of your overall grade
You will submit your solution in your subversion repository. You should name your project directory prj-1.
In addition you will demonstrate your solutions in lab section. I will give you more info on how and what
to submit.
This is a warm-up project to get you familiar with the C Programming Language and some UNIX system
calls.
1 hexdump
Write a C/UNIX program called hexdump that will dump the contents of a file as a series of lines that show
the offset, the byte values in hexadecimal, and the ASCII version of the data. Here is an example.
$ cat hello.c
#include<stdio.h>
int main(int argc, char **argv)
{
printf("Hello World\n");
return 0;
}
$ ./hexdump hello.c
00000000 23 69 6e 63 6c 75 64 65 3c 73 74 64 69 6f 2e 68 |#include<stdio.h|
00000010 3e 0a 0a 69 6e 74 20 6d 61 69 6e 28 69 6e 74 20 |>..int main(int |
00000020 61 72 67 63 2c 20 63 68 61 72 20 2a 2a 61 72 67 |argc, char **arg|
00000030 76 29 0a 7b 0a 09 70 72 69 6e 74 66 28 22 48 65 |v).{..printf("He|
00000040 6c 6c 6f 20 57 6f 72 6c 64 5c 6e 22 29 3b 0a 0a |llo World\n");..|
00000050 09 72 65 74 75 72 6e 20 30 3b 0a 7d 0a |.return 0;.}.|
0000005d
Your output should match the format in the example above. For this problem you will need to used UNIX
system calls for opening and reading files. You will also need to have a good understanding of the printf()
C library function. Note that hexdump is a utility that exists in Linux and many other operating systems.
While it is easy to find source code on the internet, you should implement your version from scratch.
2 filehist
Write a C/UNIX program called filehist that will generate histogram data for the contents of a file. That
is, filehist should count the number of occurrences of each byte in a file and print the results. Here is an
example:
$ cat foo
Hello World.
