From f68fdf3d9b44fe9fda8b9cd59325368b29eb3b3b Mon Sep 17 00:00:00 2001
From: John O'Keefe <jokeefe@fastmail.com>
Date: Sat, 3 Feb 2024 11:15:06 -0500
Subject: [PATCH] fixdom random errors and bugs

---
 cmd/headFirstCodeMagnets/variadic.go       | 2 +-
 cmd/playground/averageHeadFirstVariadic.go | 4 ++--
 cmd/playground/variadic.go                 | 8 ++++----
 cmd/sum/sum.go                             | 5 ++++-
 4 files changed, 11 insertions(+), 8 deletions(-)

diff --git a/cmd/headFirstCodeMagnets/variadic.go b/cmd/headFirstCodeMagnets/variadic.go
index 3ad8f88..134f60a 100644
--- a/cmd/headFirstCodeMagnets/variadic.go
+++ b/cmd/headFirstCodeMagnets/variadic.go
@@ -3,7 +3,7 @@ package main
 import "fmt"
 
 func sum(numbers ...int) int {
-	var sum int = 0
+	var sum = 0
 
 	for _, number := range numbers {
 		sum += number
diff --git a/cmd/playground/averageHeadFirstVariadic.go b/cmd/playground/averageHeadFirstVariadic.go
index b68ce90..f8d9a28 100644
--- a/cmd/playground/averageHeadFirstVariadic.go
+++ b/cmd/playground/averageHeadFirstVariadic.go
@@ -14,7 +14,7 @@ func averageCalc(numbers ...float64) float64 {
 	return sum / float64(len(numbers))
 }
 
-func averageHeadFirstVariadic() {
+func main() {
 	arguments := os.Args[1:]
 	var numbers []float64
 	for _, argument := range arguments {
@@ -22,5 +22,5 @@ func averageHeadFirstVariadic() {
 		Error(err)
 		numbers = append(numbers, number)
 	}
-	fmt.Printf("Average: %0.2\n", averageCalc(numbers...))
+	fmt.Printf("Average: %0.2f\n", averageCalc(numbers...))
 }
diff --git a/cmd/playground/variadic.go b/cmd/playground/variadic.go
index 58cc2d2..5f4b2d1 100644
--- a/cmd/playground/variadic.go
+++ b/cmd/playground/variadic.go
@@ -6,13 +6,13 @@ import (
 )
 
 func maximum(numbers ...float64) float64 {
-	max := math.Inf(-1)
+	maxNumber := math.Inf(-1)
 	for _, number := range numbers {
-		if number > max {
-			max = number
+		if number > maxNumber {
+			maxNumber = number
 		}
 	}
-	return max
+	return maxNumber
 }
 
 func inRange(min float64, max float64, numbers ...float64) []float64 {
diff --git a/cmd/sum/sum.go b/cmd/sum/sum.go
index 6bb43ef..ae2ac41 100644
--- a/cmd/sum/sum.go
+++ b/cmd/sum/sum.go
@@ -15,7 +15,10 @@ func OpenFile(fileName string) (*os.File, error) {
 
 func CloseFile(file *os.File) {
 	fmt.Println("Closing file")
-	file.Close()
+	err := file.Close()
+	if err != nil {
+		log.Fatal(err)
+	}
 }
 
 func GetFloats(fileName string) ([]float64, error) {