The Evolution of a Programmer
High School/Jr.High10PRINT "HELLO WORLD"
20END
First year in College
program Hello(input,output)
begin
writeln('Hello World')
end.
Senior year in College
(defun hello
(cons 'Hello (list 'World))))
New professional
#include <stdio.h>
void main(void)
{
char *message[]={"Hello ","World"};
int i;
for(i =0;i < 2;++i)
printf("%s",message[i]);
printf("\n");
}
Seasoned professional
#include <iostream.h>
#include <string.h>
class string
{
private:
int size;
char *ptr;
string():size(0),ptr(new char[1]){ptr[0]=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(<windows.h>);
importheader(<ole2.h>);
importheader(<except.hxx>);
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 <windows.h>
#include <ole2.h>
#include <stdio.h>
#include <stdlib.h>
#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
",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 <windows.h>
#include <ole2.h>
#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 <windows.h>
#include <ole2.h>
#include <stdlib.h>
#include <string.h>
#include <stdio.h>
#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);
}
Apprentice Hacker
#!/usr/local/bin/perl
$msg="Hello,world.\n";
if ($#ARGV >=0){
while(defined($arg=shift(@ARGV))){
$outfilename =$arg;
open(FILE,">".$outfilename)||die "Can't write $arg:$!\n";
print (FILE $msg);
close(FILE)||die "Can't close $arg:$!\n";
}
}else {
print ($msg);
}
1;
Experienced Hacker
#include <stdio.h>
#define S "Hello,World\n"
main(){exit(printf(S)==strlen(S)?0:1);}
Seasoned Hacker
%cc -o a.out ~/src/misc/hw/hw.c
%a.out
Guru Hacker
%echo "Hello,world."
New Manager
10PRINT "HELLO WORLD"
20END
Middle Manager
mail -s "Hello,world."bob@b12
Bob,could you please write me a program that prints "Hello,world."?
I need it by tomorrow.
^D
Senior Manager
%zmail jim
I need a "Hello,world."program by this afternoon.
Chief Executive
%letter
letter:Command not found.
To:^X ^F ^C
%help mail
help:Command not found.
%damn!
!:Event unrecognized
%logout
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