幽默：程序员的进化[转]

from http://coolshell.cn/?p=172

 

实在是搞笑  不过那个大师级的对偶来说也忒难了 --

 

2009年3月14日

高中时期

view plaincopy to clipboardprint?

1. 10 PRINT "HELLO WORLD"
2. 20 END 

大学新生

view plaincopy to clipboardprint?

1. program Hello(input, output)  
2. begin
3. writeln(\'Hello World\')  
4. end. 

高年级大学生

view plaincopy to clipboardprint?

1. #include <stdio.h>
3. int main(void)  
4. {  
5.    printf("Hello, world!\\n");  
6. return 0;  
7. }  
8. </stdio.h> 

职业新手

view plaincopy to clipboardprint?

1. #include <stdio.h>
2. void main(void)  
3. {  
4. char *message[] = {"Hello ", "World"};  
5. int i;  
7. for(i = 0; i < 2; ++i)  
8.     printf("%s", message[i]);  
9.   printf("\\n");  
10. }  
11. stdio.h> 

职业老手

view plaincopy to clipboardprint?

1. #include <iostream>
2. #include <string>
3. using namespace std;  
5. class string  
6. {  
7. private:  
8. int size;  
9. char *ptr;  
11. string() : size(0), ptr(new char[1]) { ptr[0] = 0; }  
13.    string(const string &s) : size(s.size)  
14.    {  
15.      ptr = new char[size + 1];  
16.      strcpy(ptr, s.ptr);  
17.    }  
19.    ~string()  
20.    {  
21. delete [] ptr;  
22.    }  
24. friend ostream &operator <<(ostream &, const string &);  
25.    string &operator=(const char *);  
26. };  
28. ostream &operator<<(ostream &stream, const string &s)  
29. {  
30. return(stream << s.ptr);  
31. }  
33. string &string::operator=(const char *chrs)  
34. {  
35. if (this != &chrs)  
36.    {  
37. delete [] ptr;  
38.     size = strlen(chrs);  
39.      ptr = new char[size + 1];  
40.      strcpy(ptr, chrs);  
41.    }  
42. return(*this);  
43. }  
45. int main()  
46. {  
47.    string str;  
49.    str = "Hello World";  
50.    cout << str << endl;  
52. return(0);  
53. }  
54. /string></iostream> 

大师级

view plaincopy to clipboardprint?

1.   [  
2. uuid(2573F8F4-CFEE-101A-9A9F-00AA00342820)  
3.   ]  
4.   library LHello  
5.   {  
6. // bring in the master library
7.       importlib("actimp.tlb");  
8.       importlib("actexp.tlb");  
10. // bring in my interfaces
11.       #include "pshlo.idl"
13.       [  
14. uuid(2573F8F5-CFEE-101A-9A9F-00AA00342820)  
15.       ]  
16.       cotype THello  
17.    {  
18.    interface IHello;  
19.    interface IPersistFile;  
20.    };  
21.   };  
23.   [  
24.   exe,  
25. uuid(2573F890-CFEE-101A-9A9F-00AA00342820)  
26.   ]  
27.   module CHelloLib  
28.   {  
30. // some code related header files
31.       importheader(<windows.h>);  
32.       importheader(  
33. <ole2.h>);  
34.       importheader(<except.hxx>);  
35.       importheader("pshlo.h");  
36.       importheader("shlo.hxx");  
37.       importheader("mycls.hxx");  
39. // needed typelibs
40.       importlib("actimp.tlb");  
41.       importlib("actexp.tlb");  
42.       importlib("thlo.tlb");  
44.       [  
45. uuid(2573F891-CFEE-101A-9A9F-00AA00342820),  
46.       aggregatable  
47.       ]  
48.       coclass CHello  
49.    {  
50.    cotype THello;  
51.    };  
52.   };  
54.   #include "ipfix.hxx"
56. extern HANDLE hEvent;  
58. class CHello : public CHelloBase  
59.   {  
60. public:  
61.       IPFIX(CLSID_CHello);  
63.       CHello(IUnknown *pUnk);  
64.       ~CHello();  
66. HRESULT  __stdcall PrintSz(LPWSTR pwszString);  
68. private:  
69. static int cObjRef;  
70.   };  
72.   #include <windows.h>
73.   #include
74. <ole2.h>  
75.   #include <stdio.h>
76.   #include <stdlib.h>
77.   #include "thlo.h"
78.   #include "pshlo.h"
79.   #include "shlo.hxx"
80.   #include "mycls.hxx"
82. int CHello::cObjRef = 0;  
84.   CHello::CHello(IUnknown *pUnk) : CHelloBase(pUnk)  
85.   {  
86.       cObjRef++;  
87. return;  
88.   }  
90. HRESULT  __stdcall  CHello::PrintSz(LPWSTR pwszString)  
91.   {  
92.       printf("%ws
93. ", pwszString);  
94. return(ResultFromScode(S_OK));  
95.   }  
97.   CHello::~CHello(void)  
98.   {  
100. // when the object count goes to zero, stop the server
101.   cObjRef--;  
102. if( cObjRef == 0 )  
103.       PulseEvent(hEvent);  
105. return;  
106.   }  
108.   #include <windows.h>
109.   #include
110. <ole2.h>  
111.   #include "pshlo.h"
112.   #include "shlo.hxx"
113.   #include "mycls.hxx"
115. HANDLE hEvent;  
117. int _cdecl main(  
118. int argc,  
119. char * argv[]  
120.   ) {  
121. ULONG ulRef;  
122. DWORD dwRegistration;  
123.   CHelloCF *pCF = new CHelloCF();  
125.   hEvent = CreateEvent(NULL, FALSE, FALSE, NULL);  
127. // Initialize the OLE libraries
128.   CoInitializeEx(NULL, COINIT_MULTITHREADED);  
130.   CoRegisterClassObject(CLSID_CHello, pCF, CLSCTX_LOCAL_SERVER,  
131.       REGCLS_MULTIPLEUSE, &dwRegistration);  
133. // wait on an event to stop
134.   WaitForSingleObject(hEvent, INFINITE);  
136. // revoke and release the class object
137.   CoRevokeClassObject(dwRegistration);  
138.   ulRef = pCF->Release();  
140. // Tell OLE we are going away.
141.   CoUninitialize();  
143. return(0); }  
145. extern CLSID CLSID_CHello;  
146. extern UUID LIBID_CHelloLib;  
148.   CLSID CLSID_CHello = { /* 2573F891-CFEE-101A-9A9F-00AA00342820 */
149.       0x2573F891,  
150.       0xCFEE,  
151.       0x101A,  
152.       { 0x9A, 0x9F, 0x00, 0xAA, 0x00, 0x34, 0x28, 0x20 }  
153.   };  
155.   UUID LIBID_CHelloLib = { /* 2573F890-CFEE-101A-9A9F-00AA00342820 */
156.       0x2573F890,  
157.       0xCFEE,  
158.       0x101A,  
159.       { 0x9A, 0x9F, 0x00, 0xAA, 0x00, 0x34, 0x28, 0x20 }  
160.   };  
162.   #include <windows.h>
163.   #include
164. <ole2.h>  
165.   #include <stdlib.h>
166.   #include <string.h>
167.   #include <stdio.h>
168.   #include "pshlo.h"
169.   #include "shlo.hxx"
170.   #include "clsid.h"
172. int _cdecl main(  
173. int argc,  
174. char * argv[]  
175.   ) {  
176. HRESULT  hRslt;  
177.   IHello        *pHello;  
178. ULONG  ulCnt;  
179.   IMoniker * pmk;  
180. WCHAR  wcsT[_MAX_PATH];  
181. WCHAR  wcsPath[2 * _MAX_PATH];  
183. // get object path
184.   wcsPath[0] = \'\\0\';
185.   wcsT[0] = \'\\0\';  
186. if( argc > 1) {  
187.       mbstowcs(wcsPath, argv[1], strlen(argv[1]) + 1);  
188.       wcsupr(wcsPath);  
189.       }  
190. else {  
191.       fprintf(stderr, "Object path must be specified\\n");  
192. return(1);  
193.       }  
195. // get print string
196. if(argc > 2)  
197.       mbstowcs(wcsT, argv[2], strlen(argv[2]) + 1);  
198. else
199.       wcscpy(wcsT, L"Hello World");  
201.   printf("Linking to object %ws\\n", wcsPath);  
202.   printf("Text String %ws\\n", wcsT);  
204. // Initialize the OLE libraries
205.   hRslt = CoInitializeEx(NULL, COINIT_MULTITHREADED);  
207. if(SUCCEEDED(hRslt)) {  
209.       hRslt = CreateFileMoniker(wcsPath, &pmk);  
210. if(SUCCEEDED(hRslt))  
211.    hRslt = BindMoniker(pmk, 0, IID_IHello, (void **)&pHello);  
213. if(SUCCEEDED(hRslt)) {  
215. // print a string out
216.    pHello->PrintSz(wcsT);  
218.    Sleep(2000);  
219.    ulCnt = pHello->Release();  
220.    }  
221. else
222.    printf("Failure to connect, status: %lx", hRslt);  
224. // Tell OLE we are going away.
225.       CoUninitialize();  
226.       }  
228. return(0);  
229.   }  
230. </stdio.h></string.h></stdlib.h></ole2.h></windows.h></ole2.h></windows.h></stdlib.h></stdio.h></ole2.h></windows.h></except.hxx></ole2.h></windows.h> 

黑客学徒

  #!/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

view plaincopy to clipboardprint?

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

老练的黑客

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

超级黑客

  % echo "Hello, world."

一线经理

view plaincopy to clipboardprint?

1. 10 PRINT "HELLO WORLD"
2. 20 END 

中层经理

  mail -s "Hello, world." bob@b12
  Bob, could you please write me a program that prints "Hello, world."?
  I need it by tomorrow.
  ^D

高级经理

  % zmail jim
  I need a "Hello, world." program by this afternoon.

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

来源：未知

关于更多的“hello world”请参看：《Hello World 集中营》