You are an expert in writing code in many different languages. Your goal is to perform code completion for the following code, keeping in mind the rest of the code and the file meta data.
    Metadata details:
    filename: main.go
    path of file: ./repos/learning/golang/source_code/Go语言核心编程代码/homework/03_customer/view
    
    the code of the file until where you have to start completion: // main
package main

import (
	"fmt"
	"go_code/Demo/0801/03_customer/service"
	"strings"
)

type customerView struct {
	loop            bool
	key             int
	customerService *service.CustomersService
}

func NewCV() *customerView {
	return &customerView{
		loop:            true,
		key:             0,
		customerService: service.NewCustomers(),
	}

}

func (c *customerView) Add() {
	var
    
func (c *customerView) DeleteCustomer() {
	var id int
	fmt.Println("请输入需要删除的用户ID(无需请输入-1)")
	fmt.Scanln(&id)
	var choice string
	if id == -1 {
		return
	} else {
		fmt.Printf("你确定删除ID为%v的客户吗?请输入y/n\n", id)
	}
	fmt.Scanln(&choice)
	for {
		if choice == "y" || choice == "Y" {
			c.customerService.DeleteId(id)
			fmt.Println("-------------------------客户删除成功-------------------------")
			break
		} else if choice == "n" || choice == "N" {
			break
		}
	}
}