Err malloc, free, pthreads are all abstractions and are not black box generally. You can look in them and find out what the hell is going on if you need to. C

Err malloc, free, pthreads are all abstractions and are not black box generally. You can look in them and find out what the hell is going on if you need to. C is great at networking (sockets), concurrency (pthreads), security (brain) and readability (brain). If you know what you are doing. The same is true with any language. You can write shitty C# and JavaScript.