C / C++ / MFC

	<br />
SECURITY_ATTRIBUTES saPipeSecurity = {0};<br />
PSECURITY_DESCRIPTOR pPipeSD = NULL;<br />
<br />
if(lpSecurityAttributes == NULL)<br />
{<br />
	// alloc & init SD<br />
	if ( ! ( pPipeSD = ( PSECURITY_DESCRIPTOR) <br />
			( malloc ( SECURITY_DESCRIPTOR_MIN_LENGTH)) ) )<br />
			return FALSE;<br />
		<br />
	if ( ! InitializeSecurityDescriptor ( pPipeSD, <br />
			SECURITY_DESCRIPTOR_REVISION) )<br />
			return FALSE;<br />
		<br />
		// set NULL DACL on the SD<br />
	if ( ! SetSecurityDescriptorDacl ( pPipeSD, TRUE, ( PACL) NULL, FALSE) )<br />
			return FALSE;<br />
		<br />
		// now set up the security attributes<br />
	saPipeSecurity.nLength = sizeof ( SECURITY_ATTRIBUTES);<br />
	saPipeSecurity.bInheritHandle = TRUE; <br />
	saPipeSecurity.lpSecurityDescriptor = pPipeSD;<br />
<br />
	lpSecurityAttributes = &saPipeSecurity;<br />
}<br />
<br />
m_hPipe = ::CreateNamedPipe(pszPipeName, dwOpenMode, dwPipeMode, dwMaxInstances, <br />
		dwOutBufferSize, dwInBufferSize, dwDefaultTimeOut, lpSecurityAttributes);<br />

<br />
#include iostream // had to take out <>'s to post..<br />
#include fstream<br />
#include cstring<br />
<br />
using namespace std;<br />
<br />
class phonebook {<br />
public:<br />
	char name[80];<br />
	char areacode[4];<br />
	char prefix[4];<br />
	char num[5];<br />
	phonebook() { };<br />
	phonebook(char *n, char *a, char *p, char *nm)<br />
	{<br />
		strcpy(name,n);<br />
		strcpy(areacode,a);<br />
		strcpy(prefix,p);<br />
		strcpy(num,nm);<br />
	}<br />
	friend ostream &operator<<(ostream &stream, phonebook o);<br />
	friend istream &operator>>(istream &stream, phonebook &o);<br />
};<br />
<br />
ostream &operator<<(ostream &stream, phonebook o)<br />
{<br />
	stream << o.name << "\t";<br />
	stream << "(" << o.areacode << ") ";<br />
	stream << o.prefix << "-";<br />
	stream << o.num << "\n";<br />
	return stream;<br />
}<br />
<br />
istream &operator>>(istream &stream, phonebook &o)<br />
{<br />
	cout << "Enter name: ";<br />
	stream >> o.name;<br />
	cout << "Enter area code: ";<br />
	stream >> o.areacode;<br />
	cout << "Enter prefix: ";<br />
	stream >> o.prefix;<br />
	cout << "Enter number: ";<br />
	stream >> o.num;<br />
	cout << "\n";<br />
	return stream;<br />
}<br />
<br />
bool main (void)<br />
{<br />
	phonebook a;<br />
	char c;<br />
	fstream pb("phone", ios::in | ios::out | ios::app);<br />
<br />
	if(!pb) {<br />
		cout << "Cannot open phone book file.\n";<br />
		return false;<br />
	}<br />
<br />
	for(;;) {<br />
		do {<br />
			cout << "1. Enter numbers\n";<br />
			cout << "2. Display numbers\n";<br />
			cout << "3. Quit\n";<br />
			cout << "\nEnter a choice: ";<br />
			cin >> c;<br />
		}	while(c<'1' || c>'3');<br />
		<br />
		switch(c) {<br />
		case '1':<br />
<br />
			cin >> a;<br />
			cout << "Entry is: " << a;<br />
			pb << a;<br />
			break;<br />
<br />
		case '2':<br />
<br />
			char ch;<br />
			pb.seekg(0, ios::beg);<br />
			while(!pb.eof()) {<br />
				pb.get(ch);<br />
				if(!pb.eof()) cout << ch;<br />
			}<br />
			pb.clear();<br />
			cout << endl;<br />
			break;<br />
<br />
		case '3':<br />
<br />
			pb.close();<br />
			return false;<br />
<br />
		}<br />
<br />
	}<br />
	return true;<br />
}<br />