Add linefilter

linefilter/linefilter.go

@@ -0,0 +1,21 @@
+package linefilter
+
+import (
+	"bufio"
+	"fmt"
+	"os"
+	"strings"
+)
+
+func LineFilter() {
+	sc := bufio.NewScanner(os.Stdin)
+
+	for sc.Scan() {
+		cap := strings.ToUpper(sc.Text())
+		fmt.Println(cap)
+	}
+
+	if err := sc.Err(); err != nil {
+		panic(err)
+	}
+}