C Tutorial Introduction to C language
Introduction to C language
Integer types
Char constants
Int constants
Type combination and promotion
Int overflow
Floating point types
Comments
Variables
Assignment operator
Truncation
Int vs float arithmatic
Mathematical operators
Unary Increment Operators
Pre and Post Variations
C Programming Cleverness and Ego Issues
Relational Operators
Logical Operators
Bitwise Operators
Other Assignment Operators

 

 
 
 
 

 

HOME
 

C is a professional programmer's language. It was designed to get in one's way as little as

possible. Kernighan and Ritchie wrote the original language definition in their book, The

C Programming Language (below), as part of their research at AT&T. Unix and C++

emerged from the same labs. For several years I used AT&T as my long distance carrier

in appreciation of all that CS research, but hearing "thank you for using AT&T" for the

millionth time has used up that good will.


Some languages are forgiving. The programmer needs only a basic sense of how things

work. Errors in the code are flagged by the compile-time or run-time system, and the

programmer can muddle through and eventually fix things up to work correctly. The C

language is not like that.

 

The C programming model is that the programmer knows exactly what they want to do

and how to use the language constructs to achieve that goal. The language lets the expert

programmer express what they want in the minimum time by staying out of their way.

 

C is "simple" in that the number of components in the language is small-- If two language features accomplish more-or-less the same thing, C will include only one. C's syntax is

terse and the language does not restrict what is "allowed" -- the programmer can pretty much do whatever they want.

 

C's type system and error checks exist only at compile-time. The compiled code runs in a stripped down run-time model with no safety checks for bad type casts, bad array indices,

or bad pointers. There is no garbage collector to manage memory. Instead the programmer mangages heap memory manually. All this makes C fast but fragile.

 

Analysis -- Where C Fits

Because of the above features, C is hard for beginners. A feature can work fine in one

context, but crash in another. The programmer needs to understand how the features work

and use them correctly. On the other hand, the number of features is pretty small.

 

Like most programmers, I have had some moments of real loathing for the C language. It can be irritatingly obedient -- you type something incorrectly, and it has a way of

compiling fine and just doing something you don't expect at run-time. However, as I have become a more experienced C programmer, I have grown to appreciate C's straight-to-the point style. I have learned not to fall into its little traps, and I appreciate its simplicity.

 

Perhaps the best advice is just to be careful. Don't type things in you don't understand. Debugging takes too much time. Have a mental picture (or a real drawing) of how your C code is using memory. That's good advice in any language, but in C it's critical.

 

Perl and Java are more "portable" than C (you can run them on different computers without a recompile). Java and C++ are more structured than C. Structure is useful for large projects. C works best for small projects where performance is important and the

progammers have the time and skill to make it work in C. In any case, C is a very popular and influential language. This is mainly because of C's clean (if minimal) style, it's lack

of annoying or regrettable constructs, and the relative ease of writing a C compiler.

 

Want more information and Video ???