Mikel Rychliski questions

Mikel Rychliski answers

• Why can't putc() be implemented as a macro in C++? (Or can it?)
• Why is my simple `main` program's ELF header say it's a `DYN (Shared object file)` instead of an executable? [duplicate]
• shm_unlink from the shell?
• Programmatically get accurate CPU cache hierarchy information on Linux
• Object files in an executable in Linux
• How to avoid implicit conversions from integer 0 to pointer, as the element of a vector
• Prevent negative inputs in form input type="number"?