For this assignment we will celebrate the birthday of Royalty Johnson
(Instagram Star) born in 1990 by writing a program that
can manage a "little blackbook". I.E. the program will read in a
list of names/phone numbers and search for the name specified.
When you have completed the assignment, you will have a tool to
manage all of your fans should you decide to become an Instagram Star.
The program will require the following structure:
struct _data {
char *name;
long number;
};
The program will require command line arguments:
int main(int argv, char **argc) {
Where argv is the number of arguments and argc is an array
holding the arguments (each is a string). Your program must catch
any case where no command line arguement was provided and print
a warning message (see below).
You MUST include/use the following functions, defined as follows:
int SCAN(FILE *(*stream)) - this function will open the file/stream
and return an integer indicating how many lines there are. Note that
I need to pass stream, which is a pointer, by reference. So I am
passing this as a pointer to a pointer.
struct _data *LOAD(FILE *stream, int size) - this function will
rewind the file, create the dynamic array (of size), and read in the
data, populating the _data struct dynamic array. Note that stream
is passed by value this time. The function then returns the populated
array of struct.
void SEARCH(struct _data *BlackBox, char *name, int size) - this
function will get the dynamic array of struct passed to it, the name
we are looking for, and the size of the array. This function will
then search the dynamic array for the name. See below for examples.
void FREE(struct _data *BlackBox, int size) - this function will free
up all of the dynamic memory we allocated. Take note of the number of
times malloc/calloc were called, as you need to free that same number.
Finally, the data file will be called hw4.data and will beformated as:
ron 7774013
jon 7774014
tom 7774015
won 7774016
HINTS:
------
Functions that will make things much easier:
getline()
feof()
strtok()
atoi()
* Make sure you read the man pages for each. They have some "gotchas".
SAMPLE RUNS:
------------
Case 1 - No command line argument provided.
[rmarsh@chef junk]$ ./CS230
*******************************************
* You must include a name to search for. *
*******************************************
Case 2 - Provided name is NOT in the list.
[rmarsh@chef junk]$ ./CS230 joe
*******************************************
The name was NOT found.
*******************************************
Case 3 - Provided name is in the list.
[rmarsh@chef junk]$ ./CS230 tom
*******************************************
The name was found at the 2 entry.
*******************************************
REQUIREMENTS:
-------------
1. Your program must run on Linux Mint.
2. Your full name must appear as a comment at the beginning of your
program.
3. Your source code must be named hw4-yourname.c
