Hands-On High Performance with Go

A simple Cgo example

Let's take a look at a relatively straightforward Cgo example. In this example, we will write a simple function to print "Hello Gophers" from a C binding and then we will call that C code from our Go program. In this function, we return a constant character string. We then call the hello_gophers C function within our Go program. We also use the C.GoString function to convert the C string type and the Go string type:

package main/* #include <stdio.h> const char* hello_gophers() {    return "Hello Gophers!"; }*/import "C"import "fmt"func main() {    fmt.Println(C.GoString(C.hello_gophers()))}

Once this program has been executed, we can see a simple Hello Gophers! output:

This example, while simple, shows us how we can bind C ...