Golang C Mixed

Simple example

Cgo.go

package main//#include <stdio.h>//void callC() {//    printf("Calling C code!\n");//}import "C"import "fmt"func main() {    fmt.Println("A Go statement!")    C.callC()    fmt.Println("Another Go statement!")}

Slightly complex example

CallC.h

#ifndef CALLC_H#define CALLC_Hvoid cHello();void printMessage(char* message);#endif

Callc.c

#include <stdio.h>#include "callC.h"void cHello() {    printf("Hello from C!\n");}void printMessage(char* message) {    printf("Go send me %s\n", message);}

Callc.go

 package main//#cgo CFLAGS:-i${srcdir}/callclib//#cgo ldflags: ${srcdir}/callc.a//#include <stdlib.h>//#include <callc.h>import "C" Import ("FMT" "unsafe") Func main () {FMT.    Println ("Going to call a C function!") C.chello () fmt.    Println ("Going to call another C function!")    Mymessage: = C.cstring ("This is mihalis!") Defer C.free (unsafe. Pointer (Mymessage)) c.printmessage (mymessage) fmt. Println ("All Perfectly done!")}