the-way-to-go_ZH_CN/eBook/examples/chapter_3/CandGo/c2.go

// c2.go
package print

// #include <stdio.h>
// #include <stdlib.h>
import "C"
import "unsafe"

func Print(s string) {
	cs := C.CString(s)
	defer C.free(unsafe.Pointer(cs))
	C.fputs(cs, (*C.FILE)(C.stdout))
}