Why won't my flags work?

*.go

/*
 *
 * Copyright 2015 gRPC authors.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 *
 */

package main

import (
	"log"
	"os"

	"time"
	"flag"
	"golang.org/x/net/context"
	"google.golang.org/grpc"
	pb "google.golang.org/grpc/examples/helloworld/helloworld"
)

const (
	address     = "localhost:50051"
	defaultName = "world"
)

var strFlag = flag.String("long-string", "", "Description")
var boolFlag = flag.Bool("bool", false, "Description of flag")

func init (){
	flag.StringVar(strFlag, "s", "", "Description")
}

func main() {
	flag.Parse()
	println(*strFlag, *boolFlag)


	// Set up a connection to the server.
	conn, err := grpc.Dial(address, grpc.WithInsecure())
	if err != nil {
		log.Fatalf("did not connect: %v", err)
	}
	defer conn.Close()
	c := pb.NewGreeterClient(conn)


	// Set up flags
	goodbyePtr := flag.Bool("bye", false, "says goodbye")

	// Contact the server and print out its response.
	
	name := defaultName
	if len(os.Args) > 1 {
		name = os.Args[1]
	}
	ctx, cancel := context.WithTimeout(context.Background(), time.Second)
	
	defer cancel()
	
	if *goodbyePtr != true {
		r, err := c.SayGoodbye(ctx, &pb.GoodbyeRequest{Name: name})
		if err != nil {
			log.Fatalf("could not greet: %v", err)
		}
		log.Printf("Greeting: %s", r.Message)
	} else {
		r, err := c.SayHello(ctx, &pb.HelloRequest{Name: name})
		if err != nil {
			log.Fatalf("could not greet: %v", err)
		}
		log.Printf("Greeting: %s", r.Message)
	}
	
}