I started writing a CLI application purely in C (my first proper C or C++ program that wasn't "Hello World" or a variation thereof). Around midway through I was working with "strings" of user input (char arrays) and I discovered the C++ string streamer object. I saw that I could save code using these, so I used them through the application. This means that I have changed the file extension to .cpp and now compile the app with
g++ instead of
gcc. So based on this, I would say the application is now technically a C++ application (although 90%+ of the code is written in what I would call C, as there is lots of cross-over between the two language given my limited experience of the two). It is a single .cpp file around 900 lines long.
I want the program to be free (as in money) and freely distributable and usable for all to have. My concern is that someone will look at the code and think something to the effect of:
Oh look at the coding, it's awful, this program can't help me
When potentially it could! Another matter is the code being efficient (it is a program for testing Ethernet connectivity). There should be no parts of the code that are so inefficient that they can severely hinder the performance of the application or its output. However, I think that is a question for Stack Overflow when asking for help with specific functions, methods, object calls, etc.
Having (in my opinion) mixed C and C++ where perhaps I shouldn't. Should I look to rewrite it all in C++ (by this, I mean implement more C++ objects and methods where perhaps I have coded something in a C style that can be condensed using newer C++ techniques), or remove the use of string streamer objects and bring it all "back" to C code? Is there a correct approach here? I am lost and need some guidance on how to keep this application "Good" in the eyes of the masses, so they will use it and benefit from it.
The Code - Update
Here is a link to the code. It is circa 40% comments, I comment nearly every line until I feel more fluent. In the copy I have linked to though, I have removed pretty much all the comments. I hope this doesn't make it too hard to read. I am hoping though that no one should need to fully understand it. If I have made fatal design flaws though, I am hoping they should be identifiable easily. I should also mention, I am writing a couple of Ubuntu desktops and laptops. I'm not intending to port the code to other operating systems.