¶N¤¢01ž02C - FOR BEGINNERS!ž01


¢02 Written by: ¢03Spirit/Devious.

¢02 No   doubt,    programming  in  C  is
 difficult.    But  prorgamming  in  C
 becomes a piece of cake after you get
 a  taste  of C++.  The problem with C
 is   that  its  very  soft,  like  in
 assembler,  in C or C++ you can do to
 your system as you wish.  In contrast
 to Pascal and Basic, C lets you do so
 much  more  with more freedom, Pascal
 for   example   was  developed  as  a
 learning  language  for students, and
 Basic,  well,  no matter what sort of
 Basic  you  think  of, the next thing
 that  comes  to  mind  is  '¢03whats the
 point¢02'.   Anyone that thinks Basic or
 Pascal is the best thing since sliced
 bread  has  got  to be engaged to his
 IBM.  COBOL, yeh , well, I can safely
 say  that  Cobol  is  such  a  strict
 language  that  at  the worst, all it
 does   is   complain.   Cobol  is  an
 industrial  language  often  used  on
 ¢01UNIX¢02   ,   ¢01VAX¢02   ,   ¢01CRANE¢02  mainframe
 computers.   Speaking from experience
 I can confidently ¢03NOT¢02 recommend Cobol
 even   if  I  passed  both  my  Cobol
 schooling  units,ofcourse,unless some
 business  firm  pays you enough money
 to   buy  CBM.   For  the  moment  C,
 assembler,  and  Arexx have got to be
 the  best  languages  to  date.  C is
 very   modular,   everything   is   a
 Function.   Lets  write  a  little  C
 program.

¢03 void main () /* this is a comment */
 {            /* open brace Start  */
 }            /* close brase end   */

¢02 To  have  a  C program, you must have
 the  function  main,by  the  way C is
 case  sensitive.   A  function Starts
 with { and ends with } braces.

¢03 #include <stdio.h> /*functions here*/
 void main ()
 {
 int num,no;float a;char x;
 printf ("hello\n"); /* the printf */
 printf ("number seven %d ok",(14/2));
 printf ("type a number");
 scanf ("%d",&num);
 printf ("num is %d",num);
 }

¢02 C  offers  a  lot  of  libraries  and
 functions,   in   this   example   we
 included   a   file  called  stdio.h,
 stands   for  standard  input  output
 header.   And  just  after  that  its
 being  used  in  the main function as
 printf  and  scanf.   There  is are 2
 integers  by  the name of num and no.
 The  \  is a special escape code.  \n
 means  new  line  and  \t  means tab.
 Every   command   must   end  with  a
 semicolon.   The second printf prints
 '¢03number  seven  7  ok¢02'.   See how the
 output  is  supplied  in  the  printf
 (14/2).   The  %  symbol  is  also  a
 special  qualifier, it literaly means
 to   expect  input  or  output,  what
 follows the % is the type of I/O.  In
 printf  %  is  output description,and
 scanf  is  the input.  There are many
 types  of  variables  %d  integer, %f
 float  , %c character %s string (many
 characters)  %ld  long  integer and a
 few   more   variations.   The  scanf
 expects a numeric value, and the last
 printf  prints  what  is  in  the num
 variable.

 Now  that you have a taste of C , its
 not  as frightening as you thought, C
 is  also  very detailed  and complex.
 C++  is essentialy the same as C, but
 C++   involves  new  and  challenging
 concepts in managing and handling its
 data,  the  main  aspect  of  C++  is
 object  orientativity.   It  would be
 too  difficult and long a task for me
 to  teach anything realy useful.  But
 if you didnt know a thing about C you
 now    know   a   few   things.    To
 effectively  learn C you must have an
 ANSI  C  maual,  to  Apply  C to your
 amiga  hardware  you  need  tutorials
 about   all   the  system  interfaces
 and/or libraries etc.

 I recomend SAS C 6.5+, its what I use
 on  my  amiga,  SAS offers both C and
 C++  and seems to me as the best C on
 amiga so far.