test cgo packages - https://github.com/golang/go/wiki/cgo

README.md

READ

• cgo Introduction - Github
• Command cgo - golang.org

cgo.go

package main

/*
#include <stdio.h>
#include <stdlib.h>

void mStringPrintln(char* s) {
  printf("%s\n", s);
}
*/
import "C"
import "unsafe"

func main(){
    cs := C.CString("Hello from stdio")
    C.mStringPrintln(cs)
    C.free(unsafe.Pointer(cs))
}