From ant@ecs.fullerton.edu Wed Feb 26 11:18:37 1997
Date: Wed, 19 Feb 1997 16:52:07 -0800 (PST)
From: Adam Fanello <ant@ecs.fullerton.edu>
To: James Mohler <happynet@ecs.fullerton.edu>,
    Joseph Bennett <joeandri@ecs.fullerton.edu>
Subject: Evolution of a Programmer (fwd)


The Evolution of a Programmer

------------------------------------------------------------------------


High School/Jr.High

------------------------------------------------------------------------

10 PRINT "HELLO WORLD"
20 END

First year in College

------------------------------------------------------------------------

program Hello(input, output)
  begin
    writeln('Hello World')
  end.
  
Senior year in College

------------------------------------------------------------------------

(defun hello
  (print
    (cons 'Hello (list 'World))))
    
New professional

------------------------------------------------------------------------

#include 
void main(void)   
{
  char *message[] = {"Hello ", "World"};
  int i;
  
  for(i = 0; i < 2; ++i)
    printf("%s", message[i]);
  printf("\n");
}
 
Seasoned professional

------------------------------------------------------------------------

#include 
#include   

class string
{
private:
  int size;
  char *ptr;
  
public:
  string() : size(0), ptr(new char('\0')) {}
  
  string(const string &s) : size(s.size)
  {
    ptr = new char[size + 1];
    strcpy(ptr, s.ptr);
  }
   
  ~string()
  {
    delete [] ptr;
  }
   
  friend ostream &operator <<(ostream &, const string &);
  string &operator=(const char *);
};
  
ostream &operator<<(ostream &stream, const string &s)
{
  return(stream << s.ptr);
}
 
string &string::operator=(const char *chrs)
{
  if (this != &chrs)
  {
    delete [] ptr;
    size = strlen(chrs);
    ptr = new char[size + 1];
    strcpy(ptr, chrs);
  }
  return(*this);
}
 
int main()
{
  string str;
  
  str = "Hello World";
  cout << str << endl;
  
  return(0);
}
 
Master Programmer

------------------------------------------------------------------------

[
uuid(2573F8F4-CFEE-101A-9A9F-00AA00342820)
]
library LHello
{
    // bring in the master library
    importlib("actimp.tlb");
    importlib("actexp.tlb");
    
    // bring in my interfaces
    #include "pshlo.idl"
    
    [
    uuid(2573F8F5-CFEE-101A-9A9F-00AA00342820)
    ]
    cotype THello
        {
        interface IHello;
        interface IPersistFile;
        };
};
  
[ 
exe,
uuid(2573F890-CFEE-101A-9A9F-00AA00342820)
]
module CHelloLib
{
 
    // some code related header files
    importheader();
    importheader();   
    importheader();
    importheader("pshlo.h");   
    importheader("shlo.hxx");  
    importheader("mycls.hxx"); 
 
    // needed typelibs
    importlib("actimp.tlb");
    importlib("actexp.tlb");
    importlib("thlo.tlb");  
 
    [
    uuid(2573F891-CFEE-101A-9A9F-00AA00342820),
    aggregatable
    ]
    coclass CHello
        {
        cotype THello;
        };
};
  
  
#include "ipfix.hxx"

extern HANDLE hEvent;

class CHello : public CHelloBase
{
public:
    IPFIX(CLSID_CHello);
    
    CHello(IUnknown *pUnk);
    ~CHello();
    
    HRESULT  __stdcall  PrintSz(LPWSTR pwszString);
    
private:
    static int cObjRef;
};
  
  
#include 
#include    
#include   
#include  
#include "thlo.h"   
#include "pshlo.h"  
#include "shlo.hxx" 
#include "mycls.hxx"

int CHello::cObjRef = 0;

CHello::CHello(IUnknown *pUnk) : CHelloBase(pUnk)
{
    cObjRef++;
    return;   
}
 
HRESULT  __stdcall  CHello::PrintSz(LPWSTR pwszString)
{
    printf("%ws\n", pwszString);
    return(ResultFromScode(S_OK));
}
 
 
CHello::~CHello(void)
{
 
// when the object count goes to zero, stop the server
cObjRef--;
if( cObjRef == 0 )
    PulseEvent(hEvent);
    
return;
}
 
#include 
#include    
#include "pshlo.h"  
#include "shlo.hxx" 
#include "mycls.hxx"

HANDLE hEvent;

 int _cdecl main(
int argc,
char * argv[]
) {
ULONG ulRef;
DWORD dwRegistration;
CHelloCF *pCF = new CHelloCF();

hEvent = CreateEvent(NULL, FALSE, FALSE, NULL);

// Initialize the OLE libraries
CoInitializeEx(NULL, COINIT_MULTITHREADED);

CoRegisterClassObject(CLSID_CHello, pCF, CLSCTX_LOCAL_SERVER,
                  REGCLS_MULTIPLEUSE, &dwRegistration);
                  
// wait on an event to stop
WaitForSingleObject(hEvent, INFINITE);

//      revoke and release the class object
CoRevokeClassObject(dwRegistration);
ulRef = pCF->Release();

// Tell OLE we are going away.
CoUninitialize();

return(0);
}
 
extern CLSID CLSID_CHello;
extern UUID LIBID_CHelloLib;

CLSID CLSID_CHello = { /* 2573F891-CFEE-101A-9A9F-00AA00342820 */
    0x2573F891,
    0xCFEE,
    0x101A,
    { 0x9A, 0x9F, 0x00, 0xAA, 0x00, 0x34, 0x28, 0x20 }
};
  
UUID LIBID_CHelloLib = { /* 2573F890-CFEE-101A-9A9F-00AA00342820 */
    0x2573F890,
    0xCFEE,
    0x101A,
    { 0x9A, 0x9F, 0x00, 0xAA, 0x00, 0x34, 0x28, 0x20 }
};
  
#include 
#include    
#include  
#include  
#include   
#include "pshlo.h"  
#include "shlo.hxx" 
#include "clsid.h"  

int _cdecl main(
int argc,
char * argv[]
) {
HRESULT         hRslt;
IHello         *pHello;
ULONG           ulCnt; 
IMoniker *      pmk;   
WCHAR           wcsT[_MAX_PATH];
WCHAR           wcsPath[2 * _MAX_PATH];

// get object path
wcsPath[0] = '\0';
wcsT[0] = '\0';   
if( argc > 1) {   
    mbstowcs(wcsPath, argv[1], strlen(argv[1]) + 1);
    wcsupr(wcsPath);
    }
else {
    fprintf(stderr, "Object path must be specified\n");
    
    return(1);
    }
     
// get print string
if(argc > 2)
    mbstowcs(wcsT, argv[2], strlen(argv[2]) + 1);
else
    wcscpy(wcsT, L"Hello World");
    
printf("Linking to object %ws\n", wcsPath);
printf("Text String %ws\n", wcsT);

// Initialize the OLE libraries
hRslt = CoInitializeEx(NULL, COINIT_MULTITHREADED);

if(SUCCEEDED(hRslt)) {


    hRslt = CreateFileMoniker(wcsPath, &pmk);
    if(SUCCEEDED(hRslt))
        hRslt = BindMoniker(pmk, 0, IID_IHello, (void **)&pHello);
        
    if(SUCCEEDED(hRslt)) {

        // print a string out
        pHello->PrintSz(wcsT);

        Sleep(2000);
        ulCnt = pHello->Release();
        }
    else 
        printf("Failure to connect, status: %lx", hRslt);
        
    // Tell OLE we are going away.
    CoUninitialize();
    }

return(0);
}

Enlightened Master Programmer

------------------------------------------------------------------------

10 PRINT "HELLO WORLD"
20 END