[综合|聊天·二手转让] 各阶段程序员的代码

jangwooning · 发布于 2013-07-03 09:41 · 7195 次阅读

这篇趣文是以 Hello World 为例，列举处于各阶段程序员的代码。，这篇有一定历史了，应该至少有 10 年了。

PS：亮点总是在最后。:)

初中/高中（注：Basic）

10 PRINT "HELLO WORLD"
20 END

大一（注：Pascal）

program Hallo(output);
begin
writeln('Hello, world!')
end.

大三/大四

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

入职第一年

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

入职干了几年

#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);
}

大师程序员

[
  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);
  }

新手黑客

#!/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;

有经验的黑客

#include <stdio.h>
#define S "Hello, World\n"
main(){exit(printf(S) == strlen(S) ? 0 : 1);}

入行干过好些年的黑客

% cc -o a.out ~/src/misc/hw/hw.c
% a.out

黑客大师

% echo "Hello, world."

新手经理

10 PRINT "HELLO WORLD"
20 END

中级经理

mail -s "Hello, world." bob@b12
鲍勃，你能帮我写个输出“Hello, world.”的程序么？
我明天就要。
谢谢~

高级经理

% zmail jim
Jim，我今天下午就要输出 “Hello, world.” 的程序！

CEO/首席执行官

% letter
letter: Command not found.
% mail
To: ^X ^F ^C
% help mail
help: Command not found.
% damn!
!: Event unrecognized
% logout