about c

britto116 · 11-11-2009, 03:16 AM

why they named as c programing y not d ,e .........
Then difference between structured programming and non- structured programing
Then what is the meaning for (#) which is used in #include<stdio.h>

RockyMarrone · 11-11-2009, 03:23 AM

About Your question number one

Quote:

It was named "C" because many of its features were derived from an earlier language called "B", which according to Ken Thompson was a stripped-down version of the BCPL programming language.

Courtesy of Wikipedia

Second one # means preproccesive directives i think the name suggest means before the processing means even before the compilation

C_ntua · 11-11-2009, 04:15 AM

Yes, # is used by the pre-processor, before the compilation. So when #include the compiler knows which files to look into.

I think C comes from Common, but not 100% sure

RockyMarrone · 11-11-2009, 05:02 AM

Quote:

Originally Posted by C_ntua

Yes, # is used by the pre-processor, before the compilation. So when #include the compiler knows which files to look into.

I think C comes from Common, but not 100% sure

I will extend the answer it will also include macro's #if 0 statments #ifdef calls etc.
Or even all the stuff which starts with #

Adak · 11-11-2009, 11:54 AM

The C language was based on Ken Thompson's work on the B language.

britto116 · 11-11-2009, 11:57 AM

thank u

Quote:

Originally Posted by RockyMarrone

I will extend the answer it will also include macro's #if 0 statments #ifdef calls etc.
Or even all the stuff which starts with #

nonoob · 11-11-2009, 04:12 PM

Difference between structured and non-structured... The way I remember it, if a language has begin/end clauses, whether expressed in such key words, or punctuation like brackets, it's structured. That is, there are clear blocks of code which isolate execution to within them.

Unstructured would be the old BASIC which had line numbers... It was allowable to GOTO any line from any line. There was no concept of structure. Unless the programmer imposes their own by keeping execution in segregated areas, vs. "spaghetti code".

I don't know of any current unstructured languages in current use today. Maybe Perl ... I find it pretty awful, but that may be more in the way programmers are all over the place there.

11-11-2009, 03:16 AM	#1
britto116 Registered User Join Date: Nov 2009 Posts: 9	about c why they named as c programing y not d ,e ......... Then difference between structured programming and non- structured programing Then what is the meaning for (#) which is used in #include<stdio.h>
britto116 is offline

11-11-2009, 04:15 AM	#3
C_ntua Registered User Join Date: Jun 2008 Posts: 1,276	Yes, # is used by the pre-processor, before the compilation. So when #include the compiler knows which files to look into. I think C comes from Common, but not 100% sure
C_ntua is offline

11-11-2009, 11:54 AM	#5
Adak Registered User Join Date: Sep 2006 Posts: 3,141	The C language was based on Ken Thompson's work on the B language.
Adak is offline

11-11-2009, 04:12 PM	#7
nonoob Registered User Join Date: Sep 2008 Location: Toronto, Canada Posts: 521	Difference between structured and non-structured... The way I remember it, if a language has begin/end clauses, whether expressed in such key words, or punctuation like brackets, it's structured. That is, there are clear blocks of code which isolate execution to within them. Unstructured would be the old BASIC which had line numbers... It was allowable to GOTO any line from any line. There was no concept of structure. Unless the programmer imposes their own by keeping execution in segregated areas, vs. "spaghetti code". I don't know of any current unstructured languages in current use today. Maybe Perl ... I find it pretty awful, but that may be more in the way programmers are all over the place there.
nonoob is offline

Thread Tools
Show Printable Version Email this Page
Display Modes
Linear Mode Switch to Hybrid Mode Switch to Threaded Mode