> I don't think compilers know that main() is really the entrypoint Yes they do. > since there is some code in the C runtime that runs before main So? From t

> I don't think compilers know that main() is really the entrypoint Yes they do. > since there is some code in the C runtime that runs before main So? From the point of view of the C standard, main is the entrypoint to the C code in the program the compiler is asked to compile. (Edited to add: This particular example program is in C++, but whatever.)