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52 lines
1.3 KiB
C#
52 lines
1.3 KiB
C#
/*
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* C# Program to Implement PhoneBook
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*/
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using System;
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using System.Collections;
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using System.IO;
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class PhoneBook
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{
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static void Main(string[] arg)
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{
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Hashtable tab = new Hashtable();
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string fileName;
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if
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{
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(arg.Length > 0) fileName = arg[0];
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}
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else
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{
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fileName = "phoneBook.txt";
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}
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StreamReader r = File.OpenText(fileName);
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string line = r.ReadLine();
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while (line != null)
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{
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int pos = line.IndexOf('=');
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string name = line.Substring(0, pos).Trim();
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long phone = Convert.ToInt64(line.Substring(pos + 1));
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tab[name] = phone;
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line = r.ReadLine();
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}
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r.Close();
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for (; ; )
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{
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Console.Write("Name : ");
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string name = Console.ReadLine().Trim();
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if (name == "")
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break;
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object phone = tab[name];
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if (phone == null)
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Console.WriteLine("-- Not Found in Phone Book");
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else
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Console.WriteLine(phone);
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}
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}
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}
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/*
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Name : Ram
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9999945670
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Name : Raj
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-- Not Found in Phone Book |