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 <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;
 
          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(<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\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 <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

          % cat
          Hello, world.
          ^D
      
New Manager

          10 PRINT "HELLO WORLD"
          20 END
      
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.
          % mail
          To: ^X ^F ^C
          % help mail
          help: Command not found.
          % damn!
          !: Event unrecognized
          % logout
      

 

原文地址：http://www.cs.bgu.ac.il/~omri/Humor/evolution.html