CS Assignment1 Solution

Your assignment is to modify the rndbytes.c program to produce lists of random-length (between 0 and 255) lists of random bytes in the format shown below.
Your program should take the number of lists to produce as it's first command line argument, and the output file to produce as it's second command line argument.
So if you call your program assignment1 and run that to produce 2 lists, it should produce output like that below:
    $ ./assignment1 2 output.txt
    $ cat output.txt
    0,0d
    c3,12,1c,40,61,2c,7a,af,
    9b,be,2c,04,3a

    1,4e
    2f,5a,61,53,21,77,a2,16,
    cf,bf,cf,a8,1d,8b,14,d8,
    d2,ff,bc,aa,29,9b,32,8c,
    be,1a,01,71,75,38,b7,43,
    af,c9,84,40,c0,d5,bf,dd,
    cb,0d,9c,bc,2c,27,a4,2d,
    4d,c0,ca,7a,3d,c9,7a,d3,
    8a,88,d3,37,99,f7,07,af,
    4b,35,1e,9d,4d,83,bd,31,
    67,23,69,e4,77,13
In more detail, the format is:
    • First line: list-number (between 0 and 65535, sequentially increasing), then a comma, then the random number (<256, in lowercase hex, with a leading 0 when needed) of random numbers in this list, then a newline
    • Next lines for this list: the list of random numbers (each <256 in lowercase hex with preceeding 0 when needed), with 8 numbers per line, with commas separating them, except for the last random number which is not followed by a comma, but by a newline
    • Then one blank line.
    • Then the next list as per the above.
Other than list-numbers (which are decimal) all numbers to be printed as two lowercase hex digits, with a leading zero when needed.
The bash script assignment1-verifier.sh can be used to test your program. Note that assignment1-verifier.sh may accept some not quite correct input, for example an empty file works, but code that only produces that won't pass the assignment! So do look at your output yourself too.
The python script assignment1-verifier.py can also be used to test your output.
Once submitted, your program will be tested with list-numbers randomly selected between 0 and 65535, so you should test for larger list-numbers. (More lists will also ensure that you test more corner-cases.)
An output from running ./assignment1 4 is shown below:
    $ ./assignment1 4 output.txt
    $ cat output.txt
    0,29
    05,ea,52,4e,a4,67,af,e9,
    4b,bd,f1,2e,85,5c,d9,58,
    ee,15,52,2a,83,53,bb,61,
    72,63,39,9e,16,0f,ef,41,
    dd,d0,58,f9,dd,fd,22,61,
    7e

    1,1b
    dd,86,18,11,16,af,03,ad,
    4e,05,37,8d,34,f3,81,10,
    7d,5b,69,3f,5a,64,5d,a8,
    e9,6d,23

    2,8d
    d6,c4,88,43,3c,a3,4a,33,
    0b,06,17,e5,f4,04,dc,87,
    ca,99,94,de,99,1c,26,ad,
    e6,e9,45,0c,12,b8,6b,11,
    d6,7d,19,e8,b3,d2,5d,e7,
    23,de,97,8e,9a,f7,ec,16,
    20,45,8f,ab,38,17,2c,1a,
    bb,8c,a2,8e,2a,8f,03,f5,
    bd,1a,e1,1c,84,17,17,85,
    bd,6b,01,e3,63,58,30,16,
    9c,48,d8,86,58,11,33,4a,
    52,74,bb,45,d0,ce,c7,64,
    fc,b0,91,3f,17,f4,3e,2f,
    6b,22,7f,da,af,75,f3,7c,
    92,d6,eb,1d,3d,4f,5a,2b,
    0c,f7,c9,08,0b,f1,8f,0c,
    3d,9d,6a,78,06,e0,2b,b1,
    69,b7,78,15,73

    3,1b
    37,a2,13,6c,93,28,32,26,
    52,b4,75,06,f6,ed,47,00,
    c8,93,5f,95,e2,7d,63,1a,
    10,43,e2
If you run your program and feed the output to assignment1-verifier.sh (or assignment-verifier.py) you should see something like this:
    $ ./assignment1 789 output.txt
    $ ./assignment1-verifier.sh output.txt
    Passed! read 789 entries
Deadline
The deadline for submission of this assignment is 2017-10-09
Submission
For this assignment you only need to submit your single file of source code, which can be called assignment1.c
Please do not submit other files, just the .c file (i.e., do not submit the verification shell script for example:-)