notes on C programming taken from:
The C programming Language by Brian W. Kernigan and Dennis M. Ritchie
see p 6,7

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#include <stdio.h>

main ()
{
     printf ("hello, world\n");
}
===========================================================================


#include <stdio.h>              include information about standard library. 
                                Tells the compiler to include information 
                                about the standard input/output library.
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main()                          define a function named main that receives 
                                no argument values.
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{                               statements of main are enclosed in braces.
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  printf ("hello, world\n");    main calls library function printf to print
                                this sequence of characters; \n represents
                                the newline character.
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}                               The statement of a function are enclosed
                                in braces {}.
===========================================================================
()			        empty list
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printf ("hello, world \n");     A function is called by naming it, followed
                                by a parenthesized list of arguments, so 
                                this calls the function printf with the 
                                argument "hello, world\n". printf is a 
                                library function that prints output,in this
                                case the string of characters between the 
                                quotes. A sequence of characters in double 
                                quotes, like "hello, world\n" , is called 
                                a character string or string constant.
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arguments                       One method of communicating data between 
                                functions is for the calling function to 
                                provide a list of values, called arguments, 
                                to the function it 
                                calls.
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/* my first c program */        Any characters between /* and */ are 
                                ignored by the computer; they may be used
                                freely to make a program easier to under-
                                stand. Comments may appear anywhere a blank
                                or tab or newline can.
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variables                       A quantity that may assume any one set of 
                                values. VARIABLE is a storage location for
                                a value. Each variable has a name and an
                                associated value, which may change. In c 
                                all variables must be declared before they
                                are used, usually at the beginning of the
                                function before any executable statements.
                                A declaration announces the properties of
                                variables; it consists of a type name and
                                a list of variables such as:
                                int  fahr, celsius;
                                int  lower, upper, step;
                                The type int means that the variables 
                                listed are integers (integers any of the
                                natural numbers, the negatives of these 
                                numbers, or zero).
--------------------------------------------------------------------------
data types                      int      integers. Means that the 
                                         variables listed are integers.
                                float    floating point, i.e. numbers that
                                         may have a fractional part.
                                char     character - a single byte.
                                short    short integer.
                                long     long integer.
                                double   double-precision floating point. 
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LINUX SOCKET PROGRAMMING QUE:
 p.52
    adr_inet.sin_port = ntohs(0);
    adr_inet.sin_addr.s_addr = ntoh1(INADDR_ANY);
    adr_inet.sin_addr.s_addr = ntoh1(INADDR_LOOPBACK);

    adr_inet.sin_port = htons(900);
    adr_inet.sin_addr.s_addr = inet_addr("127.0.0.95");

 p.3 http://www.quecorp.com/series/by_example/
        this will link you to code in the book

---------------------------------------------------------------------------------------
 LINUX SOCKET PROGRAMMING SAM SEAN WALTON
    p.18 the telephone or caller (client)
         dest.sin_port = htons(PORT_TIME);  /*select the port*/
    p.38 dest.sin_port = htons(13); /*port#13 (time server)*/
    
    notes: ch18 server
           kernel set up for networking,broadcasting, and multicasting
           http://www.samspublishing.com for code 
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