C keyword control statement operator Summary

From "n you must knowC LanguageProblem ", people mail, do not know why there are many errors in the original version. I just picked some key points.

I. Key Points

Bit, byte, and address operations

 

2. 32 keywords (do not confuse them with macro definitions (null, EOF)

 Int , Float , Double , Char , Struct , Union, Enum , Void , Typedef
 Long , Short , Signed, unsigned,
Const , Static , Volatile , Auto, Extern , Register
 If , Else , Do , While , For , Goto , Switch , Case , Default  
Break , Continue , Return 
 Sizeof 

 

3. Nine control statements

 
If(Else)
Switch
While,Do-While
For 
Goto 
Break,Continue,Return
 

4. 34 operators

+-*/%
><>= <=
=! =
=
~ ^ (Exclusive or) | & >>< <
& |!
* & (Get address)->. (structure member)Sizeof? :
() []
++ --
-Negative
, Comma
(Type) Forced type conversion
 

Ten extended operators:

 
+ =-= * =/= % =
>>=<<=<=^= | =
 

5. Basic Data Types

Integer int, float, Char, array, struct, pointer, shared body Union

 

Vi. Miscellaneous

Usually, you need to convert the logicCodeThinking, pay attention to cultivate

 

C is suitable for compiling operating systems and hardware drivers (the underlying development must be familiar)

C ++ is suitable for games and software, but some people think it is too bloated and terrible.

 

Compiler:

Compile: source code -- machine language -- target file (. o file, or. OBJ file) (it is very important for large projects to generate target files !)

Link: target file + system library file -- Executable File

 

Variable name (Storage Unit Address) = value (storage value) (essential)

 

VII. Summary

From the perspective of the keywords, control statements, and operators of C, C is relatively simple. In fact, C is flexible, powerful, and not so easy to grasp.

I like this language to use simple things to handle complicated transactions.