Added file-reader exercise

golangr/file-reader/go.mod

@@ -0,0 +1,3 @@
+module file-reader
+
+go 1.21.6

golangr/file-reader/main.go

@@ -0,0 +1,33 @@
+package main
+
+import (
+	"fmt"
+	"os"
+)
+
+var names = []string{}
+var err error
+
+func main() {
+	if len(os.Args) < 2 || len(os.Args) > 2 {
+		fmt.Println("Usage: ./file-reader names.txt")
+		os.Exit(1)
+	}
+
+	filePath := os.Args[1]
+
+	names, err := fileReader(filePath)
+	if err != nil {
+		fmt.Print(err)
+	}
+	fmt.Println(names)
+}
+
+func fileReader(path string) (str string, err error) {
+	b, err := os.ReadFile(path)
+	if err != nil {
+		fmt.Print(err)
+	}
+	stre := string(b)
+	return stre, err
+}

golangr/file-reader/names.txt

@@ -0,0 +1,4 @@
+word1
+word2
+word3
+word4