Tuesday, April 13, 2021
More

    The Evolution of a Programmer

    Must Read

    Programmerhttp://www.improgrammer.net
    We started this site to inspire young minds to motivate and encourage them towards Programming Language. In this site you will get programming tutorials, tech, programming facts, programming fun and programming blogs.

    Let’s see different ” hello world “programs for the programmer. Here we see program according to the programmer’s evolution. When any programmer starts coding, then in the first year of the college, then next year of college and then the professional year and so on.

    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;
     
      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

      10 PRINT "HELLO WORLD"
      20 END
    

    Middle Manager

       mail -s "Hello, world." [email protected]
      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
    

     

    Latest Articles

    More Recipes Like This