C语言--用地址调用函数

最新推荐文章于 2025-06-07 18:52:53 发布

转载最新推荐文章于 2025-06-07 18:52:53 发布 · 1.1k 阅读

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原文链接：https://my.oschina.net/u/239287/blog/69917

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#c/c++ #python

2019独角兽企业重金招聘Python工程师标准>>>  
01#include <stdio.h> 
 
  02  

  03typedef unsigned short  UNSIGNED16; 

  04typedef unsigned char   UNSIGNED8; 

  05typedef UNSIGNED16 (*DEMO_CYCLE)(void); 

  06  

  07static UNSIGNED16 lp_demo(void); 

  08static UNSIGNED16 ap_demo(void); 

  09static UNSIGNED16 md_demo(void); 

  10static UNSIGNED16 mixed_demo(void); 

  11  

  12DEMO_CYCLE  p_demo_cycle = NULL; 

  13DEMO_CYCLE  p_demo_cycle_group[4] = {lp_demo, ap_demo, md_demo, mixed_demo}; 

  14UNSIGNED8   demo_type; 

  15  

  16static UNSIGNED16 lp_demo(void) 

  17{ 

  18    printf("lp_demo执行这里\n"); 

  19    return 0; 

  20} 

  21static UNSIGNED16 ap_demo(void) 

  22{ 

  23    printf("ap_demo执行这里\n"); 

  24    return 0; 

  25} 

  26static UNSIGNED16 md_demo(void) 

  27{ 

  28    printf("md_demo执行这里\n"); 

  29    return 0; 

  30} 

  31static UNSIGNED16 mixed_demo(void) 

  32{ 

  33    printf("mixed_demo执行这里\n"); 

  34    return 0; 

  35} 

  36  

  37int main(int argc, char *argv[]) 

  38{ 

  39    UNSIGNED16  result = 0; 

  40    printf("%d\n",demo_type); 

  41        //获取函数地址 

  42    p_demo_cycle = p_demo_cycle_group[demo_type]; 

  43        //利用函数地址调用函数 

  44        result = (*p_demo_cycle)(); 

  45    return 0; 

  46}

  #include <stdio.h>

typedef unsigned short	UNSIGNED16;
typedef unsigned char   UNSIGNED8;
typedef UNSIGNED16 (*DEMO_CYCLE)(void);

static UNSIGNED16 lp_demo(void);
static UNSIGNED16 ap_demo(void);
static UNSIGNED16 md_demo(void);
static UNSIGNED16 mixed_demo(void);

DEMO_CYCLE 	p_demo_cycle = NULL;
DEMO_CYCLE 	p_demo_cycle_group[4] = {lp_demo, ap_demo, md_demo, mixed_demo};
UNSIGNED8 	demo_type;

static UNSIGNED16 lp_demo(void)
{
	printf("lp_demo执行这里\n");
	return 0;
}
static UNSIGNED16 ap_demo(void)
{
	printf("ap_demo执行这里\n");
	return 0;
}
static UNSIGNED16 md_demo(void)
{
	printf("md_demo执行这里\n");
	return 0;
}
static UNSIGNED16 mixed_demo(void)
{
	printf("mixed_demo执行这里\n");
	return 0;
}

int main(int argc, char *argv[])
{
	UNSIGNED16  result = 0;
	printf("%d\n",demo_type);
        //获取函数地址
	p_demo_cycle = p_demo_cycle_group[demo_type];
        //利用函数地址调用函数
		result = (*p_demo_cycle)();
	return 0;
} 
 
   函数名字符串指针:利用函数地址调用函数.同时利用数组的形式.以更加方便的形式进行操作