Designated Initializers For Arrays | C Programming Tutorial

[@massimorusso3894]

Grazie Professore non conoscevo l'inizializzazione degli array in questo modo. Video fantastico e fatto in modo semplice. Un saluto

[@PortfolioCourses]

You're welcome Massimo! :-)

[@yogeshchauhan9401]

Very precise video 👍

[@PortfolioCourses]

I’m glad you enjoyed it Yogesh! :-)

[@carmelostagno6352]

Thanks for your job. I learned very much from your videos and I hope you will continue in the future!

[@PortfolioCourses]

You're welcome Carmelo, I'm glad you're enjoying the videos! :-)

[@FritsvanDoorn]

One question. Although the optimizer might optimize it, ++i is faster than i++. So isn't it better to use ++i to indicate that you have thought about this? Thank you.

[@PortfolioCourses]

My understanding is that the whole topic of ++i and i++ and performance is complicated. :-) In addition to compiler optimizations, there is C vs C++, where in C++ the postfix and prefix increment operators can be overloaded for objects. There is also the issue of 'sequence points': en.wikipedia.org/wiki/Sequence_point. This answer here may be interesting, as well as the rest of the answers: stackoverflow.com/a/26482954. For this for loop though, using either i++ or ++i as the update statement will not have a difference in performance.

[@FritsvanDoorn]

@@PortfolioCourses I finally did some testing and indeed there is no difference in time. What I did was: an array of size 1000000, in a loop filled the array with its index *2, then in a new loop checked the values. Timed this for ++i and for i++ using clock_gettime() to measure nano seconds. Calculated an average over 100 times measuring. The values are actually nearly the same. Thank you for the extra information in your answer. Very interesting.

[@CoderDBF]

@@FritsvanDoornInteresting, thank you for testing this out. The only difference between science and goofing around is taking notes. You are a true scientist.

[@fifaham]

Nice

[@PortfolioCourses]

I’m glad you liked it Firas! :-)

[@mjsaedy6637]

Cool

[@PortfolioCourses]

I'm glad you enjoyed it! :-)

[@MF18-2020]

while (true) printf("thank you ");

[@PortfolioCourses]

do { printf("you're welcome"); } while (true);