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An C++ application for parsing cron expressions.

How to run the application?

- COMMAND: make
	to create the binary called 'output'
- COMMAND: make clean
	to remove all the binaries
- COMMAND: ./output < input.txt
	to see the output on the console
- COMMAND: ./output < input.txt > output.txt
	to capture the output in a file

It consists of,

- Entry point (../src)
	* main.cpp
- Accessories (../src/accessories)
	* expressions(.cpp and .h)
	* processor(.cpp and .h)
	* tokensier(.cpp and .h)
	* printer(.cpp and .h)
- Macros (../src/constants)
	* constants.h
- IO files (../iofiles)
	* input.txt    | Input file
	* output.txt   | Output file
- Makefile

What does the application do?

It parses a type of cron expression.
EXAMPLE: */15 0 1,15 * 1-5 /usr/bin/find
    -- exactly 6 parameters, in the same order
        minute       0 15 30 45 60 
        hour         0 
        day of month 1 15 
        month        1 2 3 4 5 6 7 8 9 10 11 12 
        day of week  1 2 3 4 5 
        command      /usr/bin/find

Meanings of these characters

https://docs.oracle.com/cd/E12058_01/doc/doc.1014/e12030/cron_expressions.htm