File content as of revision 2:f14c6628918a:

#include <stdarg.h> 
#include <stdio.h> 

#include <squirrel.h> 
#include <sqstdio.h> 
#include <sqstdaux.h> 

#ifdef _MSC_VER
#pragma comment (lib ,"squirrel.lib")
#pragma comment (lib ,"sqstdlib.lib")
#endif

#ifdef SQUNICODE 

#define scvprintf vfwprintf
#else 

#define scvprintf vfprintf
#endif 

void printfunc(HSQUIRRELVM v,const SQChar *s,...)
{
	va_list vl;
	va_start(vl, s);
	scvprintf(stdout, s, vl);
	va_end(vl);
}

void errorfunc(HSQUIRRELVM v,const SQChar *s,...)
{
	va_list vl;
	va_start(vl, s);
	scvprintf(stderr, s, vl);
	va_end(vl);
}

void call_foo(HSQUIRRELVM v, int n,float f,const SQChar *s)
{
	SQInteger top = sq_gettop(v); //saves the stack size before the call
	sq_pushroottable(v); //pushes the global table
	sq_pushstring(v,_SC("foo"),-1);
	if(SQ_SUCCEEDED(sq_get(v,-2))) { //gets the field 'foo' from the global table
		sq_pushroottable(v); //push the 'this' (in this case is the global table)
		sq_pushinteger(v,n); 
		sq_pushfloat(v,f);
		sq_pushstring(v,s,-1);
		sq_call(v,4,SQFalse,SQTrue); //calls the function 
	}
	sq_settop(v,top); //restores the original stack size
}

int main(int argc, char* argv[]) 
{ 
	HSQUIRRELVM v; 
	v = sq_open(1024); // creates a VM with initial stack size 1024 

	//REGISTRATION OF STDLIB
	//sq_pushroottable(v); //push the root table where the std function will be registered
	//sqstd_register_iolib(v);  //registers a library
	// ... call here other stdlibs string,math etc...
	//sq_pop(v,1); //pops the root table
	//END REGISTRATION OF STDLIB
	
	sqstd_seterrorhandlers(v); //registers the default error handlers

	sq_setprintfunc(v, printfunc,errorfunc); //sets the print function

	sq_pushroottable(v); //push the root table(were the globals of the script will be stored)
	if(SQ_SUCCEEDED(sqstd_dofile(v, _SC("test.nut"), SQFalse, SQTrue))) // also prints syntax errors if any 
	{
		call_foo(v,1,2.5,_SC("teststring"));
	}

	sq_pop(v,1); //pops the root table
	sq_close(v); 

	return 0; 
}