Rigorous resource management in C

https://sgauthier.fr/blog/rigourous_c_coding.html

• returned status ought to be checked, especially: malloc, realloc, fopen. For read/write, check errno.
• assignments evaluate to the value they assign: (a = 3) == 3
• C is guaranteed to evaluate lazily left-to-right
• (a, b, c) evaluates to c
• structure a function as: resource allocation, resource usage, resource clean up