Chapter 16

1. What is CGO?
   CGO is a powerful Go tool that handles communication between C code and Go code. This allows C code to be used in a Go application and to leverage the huge amount of existing C libraries.
2. How can you call C code from Go?
   Go offers a pseudo package called C that exposed C types, such as C.int, and some functions that will convert Go strings and bytes into C character arrays, and vice versa. The comment that comes before the import C package will be interpreted as C code, and all the functions defined in it ( be it directly, or by importing files), will be available in Go as functions of the C package.
3. How can you use Go code in C?
   If a Go function is preceded by a special comment, //export, this function will be available to the C code. It will also have to be defined as an external function in C.
4. What are the differences in data types between Go and C...