/*
C#: The Complete Reference
by Herbert Schildt
Publisher: Osborne/McGraw-Hill (March 8, 2002)
ISBN: 0072134852
*/
// Structures are good when grouping data.
using System;
// Define a packet structure.
struct PacketHeader {
public uint packNum; // packet number
public ushort packLen; // length of packet
}
// Use PacketHeader to create an e-commerce transaction record.
class Transaction {
static uint transacNum = 0;
PacketHeader ph; // incorporate PacketHeader into Transaction
string accountNum;
double amount;
public Transaction(string acc, double val) {
// create packet header
ph.packNum = transacNum++;
ph.packLen = 512; // arbitrary length
accountNum = acc;
amount = val;
}
// Simulate a transaction.
public void sendTransaction() {
Console.WriteLine("Packet #: " + ph.packNum +
", Length: " + ph.packLen +
",\n Account #: " + accountNum +
", Amount: {0:C}\n", amount);
}
}
// Demonstrate Packet
public class PacketDemo {
public static void Main() {
Transaction t = new Transaction("31243", -100.12);
Transaction t2 = new Transaction("AB4655", 345.25);
Transaction t3 = new Transaction("8475-09", 9800.00);
t.sendTransaction();
t2.sendTransaction();
t3.sendTransaction();
}
}
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