趣文：程序员的进化史

2013-6-24 10:11| 发布者: 红黑魂| 查看: 895| 评论: 0|来自: 伯乐在线

摘要: 这篇趣文有一定历史了，应该至少有 10 年了。PS：亮点总是在最后。:)初中/高中（注：Basic）110 PRINT"HELLO WORLD"220 END大一（注：Pascal）1programHallo(output);2begin3writeln('Hello, world!')4end. ...

这篇趣文有一定历史了，应该至少有 10 年了。

PS：亮点总是在最后。:)

初中/高中（注：Basic）

110 PRINT "HELLO WORLD"
220 END

大一（注：Pascal）

1program Hallo(output);
2begin
3    writeln('Hello, world!')
4end.

大三/大四

1(defun hello
2  (print
3    (cons 'Hello (list 'World))))

入职第一年

01#include <stdio.h>
02void main(void)
03{
04  char *message[] = {"Hello ", "World"};
05  int i;
06 
07  for(i = 0; i < 2; ++i)
08    printf("%s", message[i]);
09  printf("\n");
10}

入职干了几年

01#include <iostream.h>
02#include <string.h>
03 
04class string
05{
06private:
07  int size;
08  char *ptr;
09 
10string() : size(0), ptr(new char[1]) { ptr[0] = 0; }
11 
12  string(const string &s) : size(s.size)
13  {
14    ptr = new char[size + 1];
15    strcpy(ptr, s.ptr);
16  }
17 
18  ~string()
19  {
20    delete [] ptr;
21  }
22 
23  friend ostream &operator <<(ostream &, const string &);
24  string &operator=(const char *);
25};
26 
27ostream &operator<<(ostream &stream, const string &s)
28{
29  return(stream << s.ptr);
30}
31 
32string &string::operator=(const char *chrs)
33{
34  if (this != &chrs)
35  {
36    delete [] ptr;
37   size = strlen(chrs);
38    ptr = new char[size + 1];
39    strcpy(ptr, chrs);
40  }
41  return(*this);
42}
43 
44int main()
45{
46  string str;
47 
48  str = "Hello World";
49  cout << str << endl;
50 
51  return(0);
52}

大师程序员

001  [
002  uuid(2573F8F4-CFEE-101A-9A9F-00AA00342820)
003  ]
004  library LHello
005  {
006      // bring in the master library
007      importlib("actimp.tlb");
008      importlib("actexp.tlb");
009 
010      // bring in my interfaces
011      #include "pshlo.idl"
012 
013      [
014      uuid(2573F8F5-CFEE-101A-9A9F-00AA00342820)
015      ]
016      cotype THello
017   {
018   interface IHello;
019   interface IPersistFile;
020   };
021  };
022 
023  [
024  exe,
025  uuid(2573F890-CFEE-101A-9A9F-00AA00342820)
026  ]
027  module CHelloLib
028  {
029 
030      // some code related header files
031      importheader(<windows.h>);
032      importheader(<ole2.h>);
033      importheader(<except.hxx>);
034      importheader("pshlo.h");
035      importheader("shlo.hxx");
036      importheader("mycls.hxx");
037 
038      // needed typelibs
039      importlib("actimp.tlb");
040      importlib("actexp.tlb");
041      importlib("thlo.tlb");
042 
043      [
044      uuid(2573F891-CFEE-101A-9A9F-00AA00342820),
045      aggregatable
046      ]
047      coclass CHello
048   {
049   cotype THello;
050   };
051  };
052 
053  #include "ipfix.hxx"
054 
055  extern HANDLE hEvent;
056 
057  class CHello : public CHelloBase
058  {
059  public:
060      IPFIX(CLSID_CHello);
061 
062      CHello(IUnknown *pUnk);
063      ~CHello();
064 
065      HRESULT  __stdcall PrintSz(LPWSTR pwszString);
066 
067  private:
068      static int cObjRef;
069  };
070 
071  #include <windows.h>
072  #include <ole2.h>
073  #include <stdio.h>
074  #include <stdlib.h>
075  #include "thlo.h"
076  #include "pshlo.h"
077  #include "shlo.hxx"
078  #include "mycls.hxx"
079 
080  int CHello::cObjRef = 0;
081 
082  CHello::CHello(IUnknown *pUnk) : CHelloBase(pUnk)
083  {
084      cObjRef++;
085      return;
086  }
087 
088  HRESULT  __stdcall  CHello::PrintSz(LPWSTR pwszString)
089  {
090      printf("%ws
091", pwszString);
092      return(ResultFromScode(S_OK));
093  }
094 
095  CHello::~CHello(void)
096  {
097 
098  // when the object count goes to zero, stop the server
099  cObjRef--;
100  if( cObjRef == 0 )
101      PulseEvent(hEvent);
102 
103  return;
104  }
105 
106  #include <windows.h>
107  #include <ole2.h>
108  #include "pshlo.h"
109  #include "shlo.hxx"
110  #include "mycls.hxx"
111 
112  HANDLE hEvent;
113 
114   int _cdecl main(
115  int argc,
116  char * argv[]
117  ) {
118  ULONG ulRef;
119  DWORD dwRegistration;
120  CHelloCF *pCF = new CHelloCF();
121 
122  hEvent = CreateEvent(NULL, FALSE, FALSE, NULL);
123 
124  // Initialize the OLE libraries
125  CoInitializeEx(NULL, COINIT_MULTITHREADED);
126 
127  CoRegisterClassObject(CLSID_CHello, pCF, CLSCTX_LOCAL_SERVER,
128      REGCLS_MULTIPLEUSE, &dwRegistration);
129 
130  // wait on an event to stop
131  WaitForSingleObject(hEvent, INFINITE);
132 
133  // revoke and release the class object
134  CoRevokeClassObject(dwRegistration);
135  ulRef = pCF->Release();
136 
137  // Tell OLE we are going away.
138  CoUninitialize();
139 
140  return(0); }
141 
142  extern CLSID CLSID_CHello;
143  extern UUID LIBID_CHelloLib;
144 
145  CLSID CLSID_CHello = { /* 2573F891-CFEE-101A-9A9F-00AA00342820 */
146      0x2573F891,
147      0xCFEE,
148      0x101A,
149      { 0x9A, 0x9F, 0x00, 0xAA, 0x00, 0x34, 0x28, 0x20 }
150  };
151 
152  UUID LIBID_CHelloLib = { /* 2573F890-CFEE-101A-9A9F-00AA00342820 */
153      0x2573F890,
154      0xCFEE,
155      0x101A,
156      { 0x9A, 0x9F, 0x00, 0xAA, 0x00, 0x34, 0x28, 0x20 }
157  };
158 
159  #include <windows.h>
160  #include <ole2.h>
161  #include <stdlib.h>
162  #include <string.h>
163  #include <stdio.h>
164  #include "pshlo.h"
165  #include "shlo.hxx"
166  #include "clsid.h"
167 
168  int _cdecl main(
169  int argc,
170  char * argv[]
171  ) {
172  HRESULT  hRslt;
173  IHello        *pHello;
174  ULONG  ulCnt;
175  IMoniker * pmk;
176  WCHAR  wcsT[_MAX_PATH];
177  WCHAR  wcsPath[2 * _MAX_PATH];
178 
179  // get object path
180  wcsPath[0] = '\0';
181  wcsT[0] = '\0';
182  if( argc > 1) {
183      mbstowcs(wcsPath, argv[1], strlen(argv[1]) + 1);
184      wcsupr(wcsPath);
185      }
186  else {
187      fprintf(stderr, "Object path must be specified\n");
188      return(1);
189      }
190 
191  // get print string
192  if(argc > 2)
193      mbstowcs(wcsT, argv[2], strlen(argv[2]) + 1);
194  else
195      wcscpy(wcsT, L"Hello World");
196 
197  printf("Linking to object %ws\n", wcsPath);
198  printf("Text String %ws\n", wcsT);
199 
200  // Initialize the OLE libraries
201  hRslt = CoInitializeEx(NULL, COINIT_MULTITHREADED);
202 
203  if(SUCCEEDED(hRslt)) {
204 
205      hRslt = CreateFileMoniker(wcsPath, &pmk);
206      if(SUCCEEDED(hRslt))
207   hRslt = BindMoniker(pmk, 0, IID_IHello, (void **)&pHello);
208 
209      if(SUCCEEDED(hRslt)) {
210 
211   // print a string out
212   pHello->PrintSz(wcsT);
213 
214   Sleep(2000);
215   ulCnt = pHello->Release();
216   }
217      else
218   printf("Failure to connect, status: %lx", hRslt);
219 
220      // Tell OLE we are going away.
221      CoUninitialize();
222      }
223 
224  return(0);
225  }

新手黑客

01#!/usr/local/bin/perl
02$msg="Hello, world.\n";
03if ($#ARGV >= 0) {
04  while(defined($arg=shift(@ARGV))) {
05    $outfilename = $arg;
06    open(FILE, ">" . $outfilename) || die "Can't write $arg: $!\n";
07    print (FILE $msg);
08    close(FILE) || die "Can't close $arg: $!\n";
09  }
10} else {
11  print ($msg);
12}
131;

有经验的黑客

1#include <stdio.h>
2#define S "Hello, World\n"
3main(){exit(printf(S) == strlen(S) ? 0 : 1);}

入行干过好些年的黑客

1% cc -o a.out ~/src/misc/hw/hw.c
2% a.out

黑客大师

`1`	`%` `echo` `"Hello, world."`

新手经理

110 PRINT "HELLO WORLD"
220 END

中级经理

1mail -s "Hello, world." bob@b12
2鲍勃，你能帮我写个输出“Hello, world.”的程序么？
3我明天就要。
4谢谢~

高级经理

1% zmail jim

`2`	`Jim，我今天下午就要输出 “Hello, world.” 的程序！`

CEO/首席执行官

`1`	`% letter`

2letter: Command not found.

3% mail

4To: ^X ^F ^C

5% help mail

6help: Command not found.

7% damn!

8!: Event unrecognized

9% logout

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趣文：程序员的进化史

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