normalize printing

examples/variadic-functions/variadic-functions.go

@@ -9,25 +9,25 @@ import "fmt"
 
 // Here's a function that will take an arbitrary number
 // of `ints` as arguments.
-func sum(nums ...int) int {
+func sum(nums ...int) {
     fmt.Print(nums, " ")
     total := 0
     for _, num := range nums {
         total += num
     }
-    return total
+    fmt.Println(total)
 }
 
 func main() {
 
     // Variadic functions can be called in the usual way
     // with individual arguments.
-    fmt.Println(sum(1, 2))
-    fmt.Println(sum(1, 2, 3))
+    sum(1, 2)
+    sum(1, 2, 3)
 
     // If you already have multiple args in a slice,
     // apply them to a variadic function using
     // `func(slice...)` like this.
     nums := []int{1, 2, 3, 4}
-    fmt.Println(sum(nums...))
+    sum(nums...)
 }