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struct Bird{
char name[20];//ÐÕÃû
char color; //ÑÕÉ«
char addr[30]; //ÆÜÏ¢µØ
int weight; //ÌåÖØ
int other; //ÊôÐÔ
}; |
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p.name = "bird";
p.color = 'b'; //'b' = black; 'g' = green
p.addr = 'w';
p.weight = 175;
p.other = 1; |
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struct fBird{
struct Bird p;
char fly[20]; //·ÉÏè
int scream; //Ãù½Ð
}; |
¶ÔBird½øÐд´½¨¶ÔÏ󣬲¢¸³Öµ£º
struct fBird
s;
s.p.name = "bird";
s.p.color = 'b';
s.p.other = 25;
s.p.weight = 65;
s.fly = "0618";
s.scream = 90; |
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struct Bird{
void (*print)(void *p);
};
struct fBird{
struct Bird p;
}; |
¶øBirdºÍfBirdÕâÁ½¸ö½á¹¹ÌåµÄprintº¯ÊýʵÏÖÈçÏ£º
void printBird(void
*Bird){
if(NULL == Bird)
return ;
struct Bird *p = (struct Bird *)Bird;
printf("run in the Bird!!\n");
}
void printfBird(void *Bird){
if(NULL == Bird)
return ;
struct Bird *p = (struct Bird *)Bird;
printf("run in the fBird!!\n");
} |
ÎÒÃÇдһ¸öº¯ÊýÀ´µ÷ÓÃËûÃÇ£º
void print(void
*Bird){
if(NULL == Bird)
return ;
struct Bird *p = (struct Bird *)Bird;
p->print(Bird);
}
int main(){
struct Bird bird;
struct fBird fbird;
Bird.print = printBird;
fBird.p.print = printfBird; print(&bird);
//ʵ²ÎΪBirdµÄ¶ÔÏó
print(&fbird); //ʵ²ÎΪfBirdµÄ¶ÔÏó
return 0;
} |
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run in the Bird!!
run in the fBird!! |
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LW_OOPCÊÇ̨ÍåµÄMISOOÍŶӸù¾Ý¶àÄêÑз¢¾Ñ飬×ܽá³öÀ´µÄÒ»ÖÖÇá±ãµÄÃæÏò¶ÔÏóµÄCÓïÑÔ¡£ËäÈ»²»×ãÒÔÌṩ×ã¹»µÄÄÜÁ¦Ê¹ÎÒÃÇʵÏÖÃæÏò¶ÔÏóËùÓеĸÅÄµ«ÊÇÎÒÃÇÒÀÈ»¿ÉÒÔÓ¦ÓÃËüÃÇÍê³ÉÎÒÃǼòµ¥µÄÃæÏò¶ÔÏó˼ÏëµÄ¹¹½¨¡£
lw_oopc½öÓÃÁË2¸öÎļþ£¬.h¼°.cÎļþ¾ÍʵÏÖÁËÃæÏò¶ÔÏóµÄÈý´óÒòËØ£¬ÊµÏÖ¹ý³Ì¼«Îª¼ò½àÓÖ¸»º¬¼¼ÇÉ¡£lw_oopc˵°×ÁË£¬¾ÍÊǶ¨ÒåÁËÒ»¶Ñºê£¬Ê¹ÓÃÆðÀ´Ò²¾ÍÊǵ÷ÓÃÕâЩºê¡£
//| INTERFACE
| ½Ó¿Ú
//----------------------------------------------------------------------
//| CLASS | Àà
//----------------------------------------------------------------------
//| CTOR | ¹¹ÔìÆ÷¿ªÊ¼
//----------------------------------------------------------------------
//| END_CTOR | ¹¹ÔìÆ÷½ØÖ¹
//----------------------------------------------------------------------
//| FUNCTION_SETTING | ¹ØÁª³ÉÔ±º¯ÊýÖ¸Õë
//----------------------------------------------------------------------
//| IMPLEMENTS | ¼Ì³Ð
//----------------------------------------------------------------------
//| DTOR | ΪÁËÖ§³ÖÎö¹¹º¯ÊýµÄ¸ÅÄî
//| END_DTOR |
//----------------------------------------------------------------------
//| ABS_CLASS | ΪÁËÖ§³Ö³éÏóÀàµÄ¸ÅÄî
//----------------------------------------------------------------------
//| ABS_CTOR | ΪÁËÖ§³Ö¿É¼Ì³ÐµÄ³éÏóÀàµÄ¹¹Ô캯Êý
//| END_ABS_CTOR |
//----------------------------------------------------------------------
//| EXTENDS | ΪÁËÈÃÊìϤJavaµÄÈËÈÝÒ×Àí½â£¨ÓëIMPLEMENTSºêµÈͬ£©
//----------------------------------------------------------------------
//| SUPER_CTOR | ΪÁËÖ§³Ö×ÓÀàµ÷Óø¸ÀàµÄ¹¹Ô캯Êý
//----------------------------------------------------------------------
//| SUPER_PTR | ΪÁËÖ§³ÖÏòÉÏתÐÍ
//| SUPER_PTR_2 |
//| SUPER_PTR_3 |
//----------------------------------------------------------------------
//| SUB_PTR | ΪÁËÖ§³ÖÏòÏÂתÐÍ
//| SUB_PTR_2 |
//| SUB_PTR_3 |
//----------------------------------------------------------------------
//| INHERIT_FROM | ΪÁËÖ§³Ö·ÃÎÊÖ±½Ó¸¸ÀàµÄÊý¾Ý³ÉÔ±
//---------------------------------------------------------------------- |
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LW_OOPC¸ÅÊö
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//lw_oopc.h :
MISOOÍŶÓÉè¼ÆµÄCºê
#include
#ifndef LW_OOPC
#define LW_OOPC #define CLASS(type) /
typedef struct type type; /
struct type #define CTOR(type) /
void* type##New() /
{ /
struct type *t; /
t = (struct type*)malloc(sizeof(struct type));
#define CTOR2(type, type2) /
void* type2##New() /
{ /
struct type *t; /
t = (struct type*)malloc(sizeof(struct type));
#define END_CTOR return (void*)t; }
#define FUNCTION_SETTING(f1, f2) t->f1 =
f2;
#define IMPLEMENTS(type) struct type type
#define INTERFACE(type) struct type #endif
/* lw_oopc.h */ |
ÏÂÃæÒ»¶Î´úÂëÊǼòµ¥µÄOOPCµÄÓ¦ÓÃ:
// Circle.c
#include
#include "lw_oop.h"
#define PI 3.1415926 CLASS(Circle)
{
double (*cal_area)(double);
} double circle_cal_area(double radius)
{
return PI*r*r;
} CTOR(Circle)
FUNCTION_SETTING(cal_area, circle_cal_area)
END_CTOR |
int main()
{
double area = 0.0;
Circle *pc;
pc = (Circle*)CircleNew();
area = pc->cal_area(10);
printf("area = %f/n", area);
return 0;
} |
½Ó¿ÚµÄʵÏÖ
ÔÚOOP³ÌÐòÖУ¬Í¨³£ÊÇͨ¹ýÀඨÒåºÍ½Ó¿Ú¶¨ÒåÀ´ÊµÏֵġ£
//IA.h
#include "lw_oopc.h"
INTERFACE(IA)
{
void (*init)(void*, double);
double (*cal_area)(void*);
double (*cal_permimeter)(void*);
} |
//circle.c
#include "IA.h"
#define PI 3.1415926 CLASS(Circle)
{
IMPLEMENTS(IA);
double radius;
} static void circle_init(void* circle, double
radius)
{
Circle *_this = (Circle*)circle; _this->radius = radius;
} static double circle_cal_area(void* circle)
{
Circle *_this = (Circle*)circle; return PI*_this->radius*_this->radius;
} static double circle_cal_permimeter(void* circle)
{
Circle *_this = (Circle*)circle; return 2*PI*_this->radius;
} CTOR(Circle)
FUNCTION_SETTING(IA.init, circle_init)
FUNCTION_SETTING(IA.cal_area, circle_cal_area)
FUNCTION_SETTING(IA.cal_permimeter, circle_cal_permimeter)
END_CTOR |
//main.c
#include
#include ¡°IA.h¡±
void print_area(IA* pi)
{
printf("area = %f/n", pi->cal_area(pi));
} int main()
{
IA *pc = NULL; pc = (IA*)CircleNew();
pc->init(pc, 10.0); print_area();
return 0;
}
|
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