update tutorial to new language.

add a section on printing
add a section on allocation

R=rsc
DELTA=500  (278 added, 15 deleted, 207 changed)
OCL=22381
CL=22456

1 files changed, 2 insertions, 2 deletions

diff --git a/doc/progs/sum.go b/doc/progs/sum.go
index c8e7b10a7..3ca1a5877 100644
--- a/doc/progs/sum.go
+++ b/doc/progs/sum.go
@@ -4,7 +4,7 @@
 
 package main
 
-func sum(a *[]int) int {   // returns an int
+func sum(a []int) int {   // returns an int
 	s := 0;
 	for i := 0; i < len(a); i++ {
 		s += a[i]
@@ -14,6 +14,6 @@ func sum(a *[]int) int {   // returns an int
 
 
 func main() {
-	s := sum(&[]int{1,2,3});  // pass address of int array
+	s := sum([3]int{1,2,3});  // a slice of the array is passed to sum
 	print(s, "\n");
 }