The course requires 100% perfection in order to move on from one assignment to the next in the course as well as from one course to the next within the specialization. This expectation becomes incredibly challenging based upon 1) the minimal teaching videos, 2) lack of programming examples and practice exercises, 3) requiring students to learn and implement tools not addressed in the lessons (e.g. qsort() and void * variables), and 4) heavily relying upon reading out-of-context selections from a textbook co-written by one of the instructors.

The structure of this course consistently poses a problem (see the discussions) when a student struggles to understand the material or cannot figure out how to fix their program, even when submitting screenshots of bugs within the course grader. Too often, the instructors and/or their staff ignore questions and do not always provide feedback to assist the student in understanding why their code does not work (once again see the discussions).

These flaws could be overlooked if auditing these courses were an option, but at $49 per month these courses should be designed to enable students to learn foundational concepts without demanding absolute perfection. For students who want to learn C Programming, a much better option would be cs50x and/or C Programming with Linux through edX. Both of these courses can be audited for free and do not possess any of the issues mentioned above.

The quality of assignments slipped rather abruptly in this course. The assignments were rather unclear, ambiguous and often required reading through forum posts and learning through other people's frustrated comments. This specialization started strong but the course really slipped in quality. The means of education was inefficient, the presentation of assignments was sloppy and under-specified and the final project was unnecessarily tedious and time-consuming and could have easily been replaced by something else (a different card game such as BlackJack vs Texas Hold 'Em Poker) delivering the same practice without a lot of the tedious rule generation.

The content of this course was informative and very challenging. I definitely learned a few things about pointers in C that I didn't know before. If this course were on another platform I would give it 5 stars.

However, this course isn't on another platform. It's on Coursera. I have never had such a frustrating time with any MOOC before this and I've completed several of them. The built-in terminal that we used to complete our assignments would often kick me out without any notice. I received no credit for most of my completed assignments due to some bug on Coursera's end. This bug was first reported months before I started the class and it persisted up until my final week of the course. I think that I completed the course but I'm not sure. It's tough to be certain when you click the link to view your certificate and it raises an error.

Wow! I took my first course that was heavy in C in college and I remember it being challenging. Eight years later, I have to say that C is still a challenging topic! I very much enjoying refreshing knowledge that I learned a very long time ago and had forgotten. I'm also pretty pleased with how much better I am at emacs :) I especially liked the clear introduction of how a program is actually organized in memory. Tail recursion explanation was very interesting as well. One thing that I would love to see improved is some of the testing exercises -- it is easy to get stuck and have several days of progress ruined without really learning anything new. This is small but extremely frustrating. Overall I really appreciate this course and think it was immensely helpful for me in my continuing studies. Very well organized and found the pace of the lectures excellent. Very happy and excited, thanks!

This was an amazing experience to be a part of this course. It helped me to boost up my confidence.

So disappointed in this class/specialization. The tools (programming environment) is buggy, slow, and a pain to use. Instruction is lacking in content and clarity. Had to waste massive amounts of time googling and looking up explanations on discussion boards.

I've taken over 50 Coursera courses, and this is the first specialization I quit because I just couldn't keep putting more effort into taking the course than the instructors put into making it.

Excellent course with valuable testing and debugging lessons! My only constructive feedback is for Duke to add more clarity to the assignments and their README's and for Coursera to adjust the time commitment. It took me well 30+ additional hours beyond the time commitment estimate.

This course is certainly very challenging and I am glad I made it. To those who are still struggling with the poker game project, I encourage you to keep working hard and you will achieve a lot.

Good course, tricky problems that make you think. Got VERY frustrated a few times but completed it. This also got me into emacs but with vim keybindings.

End of course project was challenging and fun. Lots of opportunity to learn how to debug memory issues with valgrind.

Very well designed hands-on training course for developing a real software program in C.

First, let me say I was a C programmer 15 years ago with 8 years experience. I had forgotten MOST of what I had learned. So, I used this course to refresh my memory and learn some new things.

I think it is great. HOWEVER, I honestly think that the last two assignments especially the last one was too much and too big. I think they treated double pointers as same difficulty as assignment statements. I think they should have gone through a BIG real-life example of how to use double pointers instead of dumping us into the poker project (like learning to swim by pushing someone into the deep end).

The other problem is that we are billed per month or we purchased X months in advance and any messages we post are not being replied to timely. So, we have to wait days for a reply. This costs us money. Why can't they put a trigger which emails the person in charge and they can reply soon?

Otherwise, it is a GREAT course.

difficult project but it was worth it

Final projects are time consuming with the poor instructions provided.. you need to figure a lot out by yourself. But isn't it the nature of all programing lol?

Good course, but the final project and test cases are slightly challenging

Really frustrating experience. The course content was challenging and interesting, but I am so tired of trying to access the online programming environment just to see that it's down. Very demotivating to see I can't work on the course when I want to.

Project is very hard. Not for the beginner. I am a lecturer of a university. Still I find it very difficult to do. This should be for intermediate level.

No support for taking up the programming assignments. The PPE for programming assignment is down most of the time.

PPE troubled a lot

This is course is one of the greatest coding courses that I have taken in Coursera. The coding assignment is a bit of challenging, definitely needs to put in a lot of time. In the beginning, I skip the part about gdb and Valgrind thinking that they are not that important, and later when I was trying to debug my program, I finally realized that it is extremely hard to move on if you don't master these skills. Anyway, this course definitely worth putting your effort into it.