C language syllabus review

#include <stdio.h> 

int main () { 

    return 0 ; 
} 
/ * 
* function 
* - defined functions 
* - parameter lists 
* - by value 
* - // address transmission address transmitted modify variable values 
* - arrays as parameters 
* - the first array element address transfer (array name) 
* - pass the array length 
* - string array as a parameter 
* - pass the first array element address (access to "\ 0" up) 
* - return value 
* - If the return value of type void 
* behind -return statement can not take any value 
* - If the return value is not of type void 
* - must return the value of the corresponding type 
* - function can not return to the variables 
* 
* - pre-function declaration 
* - function definition when statement at the time the statement after the function call, you need to pre-declare the function 
* - // may only three formal parameter name is omitted pre-function declarations of interest 
* - the return value type 
* - function names 
* - parameter list type and order number of the parameters and parameter, parameter names do not care 
* 
* - recursive function
* - direct or indirect calls itself, is called recursively 
* - first determine recursive formula 
* - first determine recursive formula in determining recursive end condition 
* - (certainly before the end of the conditions, recursively) when writing code to write recursive end condition in writing recursive formula 
* - pointer to the function 
* int Fun (a int, int B); 
* int (* P) (a int, int B); 
* P (1,2); <==> Fun (. 1 , 2); 
* 
* - basic string operations (to write code implementation) 
* -strlen (); 
* -strcpy (); 
* -strcat (); 
* -strcmp (); 
* 
* - body results 
* - structure the definition body 
* - what is the type of structure type name 
* - simplified by typedef type name 
* Student typedef struct { 
* char name [20 is]; 
* int Age; 
* Student * struct tongzhuo; // not uppercase Student allows 
* Student}, PStudent *; 
* <==> 
*. 1, typedef struct Student Student; 
* 2, * Student PStudent typedef struct;
* - union, enum 
* - joint, all members of a common memory, only the last function was assigned 
* Union text { 
* int A; 
* doible B; 
*}; 
* Union Test T; 
* TA = 10; 
* TB = 3.14; 
* - essence enumeration is shaping, the shaped body but does not allow enumeration assigned to enumeration, enumeration can be assigned to the orthopedic 
* Sex enum {Boy, Girl}; 
* enum Sex zhangsan; 
* = zhangsan Boy ; // zhangsan = 0; // not 
* int NUM = zhangsan; 
* int NUM = Boy; 
* - list 
* - defined list of nodes 
* -data 
* -next 
* struct {node 
* char name [20 is]; 
* Age int; 
* struct Node * Next; 
*} 
* 
* Student struct { 
* char name [20 is]; 
* int Age; 
*} 
* {struct Node
Struct Student Data *; 
* P * struct Node; 
*} 
* - Insert the list (tail plug head) 
* - release list 
* - seeking chain length 
* - print list traversal 
* - Find the list of elements 
* - list element delete 
* /