// Copyright 2009 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.

package main

func sum(a *[]int) int {   // returns an int
	s := 0;
	for i := 0; i < len(a); i++ {
		s += a[i]
	}
	return s
}


func main() {
	s := sum(&[]int{1,2,3});  // pass address of int array
	print(s, "\n");
}