C program to show execution from luaL_loadbuffer, tested with lua 5.3.1

testlua.c

//compiling on OSX 10.11
//export LUA=path/to/lua-5.3.1/src
//cc -I $LUA  -L $LUA -l lua -o testlua testlua.c
#include <stdio.h>
#include <string.h>
#include "lua.h"
#include "lualib.h"
#include "lauxlib.h"

char *luacode =
    "io.write(\"Hello from Lua\\n\");\n"
    ;

int main(int argc, char *argv[]) 
{
	lua_State *L = luaL_newstate();

	luaL_openlibs(L);
	int err = luaL_loadbuffer(L, luacode, strlen(luacode), "testscript");
	if (err) 
	{
		fprintf(stderr, "%s", lua_tostring(L, -1));
		lua_pop(L, 1);  /* pop error message from the stack */
	}

	lua_pcall(L, 0, 0, 0);
	lua_close (L);

	return 0;
}