In Chapter 1, “Getting Started,” we needed the ability to exit our program and to display a string. We used Raspbian Linux to do this, invoking operating system services directly. In all high-level programming languages, there is a runtime library that includes wrappers for calling the operating system. This makes it appear that these services are part of the high-level language. In this chapter, we’ll be looking at what these runtime libraries do under the covers to call Linux and what services are available to us.
We will review the syntax for calling the operating ...
