The printDemo subdir includes source code to a program that prints text files line-by-line with line numbers. It does lots of malloc and pointer futzing. You can demo it by running "make demo".
Be sure to examine how the "demo" production in the Makefile works.
Your lab should be added to the "tokenizer" subdir and pushed back to the repository for grading.
A summary of the lab assignment follows. The full assignment is on the course web site.
Objective
In this lab, you will demonstrate a competency in the "C" programming language. Competency in C will be required for future success in this course. Skills that you must acquire before attempting this lab
Familiarity with the C programming language How to run a text editor (such as emacs) You will demonstrate mastery of
Arrays and pointers memory allocation Separate compilations and linking Writing a simple Makefile Assignment
Write a tokenizer function mytoc() in a file called mytoc.c. Mytoc()'s signature must also be provided in a "header" file named mytoc.h. Write file named test.c containing a test program that includes the header file mytoc.h. The behavior of this program is described below. Write a Makefile that compiles the two source files and links them to build a functional test program named "test". A description of mytoc:
In general, tokenizers partition a character string into individual tokens (words) separated by reserved "delimiter characters".? In this case, the delimiter character is the space character and tokens contain any characters other than space characters.
Your function "mytoc" should have the following signature:
char ** mytoc(char *str, char delim) A call to mytoc() should return a freshly allocated null-terminated array of pointers to freshly allocated strings containing each "token" from the input string. The input string can be of any length, and should not be modified. The vector returned by mytoc() and the strings referenced by it, should all be allocated using malloc or calloc (so that it would be appropriate to free() them). Finally, these dynamically allocated blocks of memory should not be larger (or smaller) than required.
For example, a call to mytoc("hello world", ' ') should return the address of an array containing:
{"hello", "world", (char*)0} Other than malloc/calloc/free, your implementation of mytoc should only call functions written by you. In particular, calls to functions whose prototypes are in "string.h" such as "strtok()" are prohibited.