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1.Ϊʲô¶¨Ò庯Êýʱ£ºfun1 ¿ÉÒÔÕýÈ·µÄ·µ»Ø¶øfun2²»ÐУ¿
char * fun1()
{
  char *p = "haha";
  return p;
}
char * fun2()
{
  char p[] = "haha";
  return p;
}
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fun1ÖÐpÊÇÒ»¸ölocalµÄ±äÁ¿£¬ËüÖ¸ÏòÒ»¸ö¿Õ¼ä£¬¿Õ¼äÖд洢ÓÐhaha£¬º¯Êý½áÊøÊ±pÕâ¸ö±äÁ¿±»destroyµô£¬¶øËüÖ¸ÏòµÄ¿Õ¼ä»¹ÊÇÓÐÊý¾ÝûÓб»Ïú»Ù,¸ø³£Á¿×Ö·û´®·ÖÅäµÄ¿Õ¼äÓÐʲô²»Í¬£¬ÊÇ·ñÊDZàÒëʱ·ÖÅä¶ø²»ÊÇÔÊÐíʱ·ÖÅ䣬ËùÒÔÕⲿ·ÖÄÚÈÝÒ»Ö¶¼ÓУ¿
¶øfun2Öиøp·ÖÅäÒ»¿é¿Õ¼ä×°haha£¬º¯Êý½áÊøÕâ¿é±»·ÖÅäµÄ¿Õ¼ä±»Êջأ¬ÀïÃæµÄÄÚÈÝÒ²¾ÍûÓÐÁË¡£

2.¹ØÓÚ¶àάÊý×éµÄÎÊÌ⣺
void fun3()
{
  char p[][4] = {"11","22","33","44"};
  printf("%s",p+1);//Õâ¸ö¿ÉÒÔÊä³ö22
  printf("%s",*(p+1));//Õâ¸ö¿ÉÒÔÊä³ö22
  printf("%s",p[1][4]);//ΪʲôÕâ¸ö´íÎó*(p+1)²»¾ÍÊÇp[1][4]Â
}


http://blog.163.com/yan_zhennan@126/blog/static/10934475020098128952406/


**(p+1)ÊÇp[1][0]



printf("%s",p[1][4]);//ΪʲôÕâ¸ö´íÎó*(p+1)²»¾ÍÊÇp[1][4]Â

·´ÕýÔ½½çÁË¡£ http://blog.163.com/xuchaoyang88/blog/static/17339733200981525955103/

char *p = "haha"; ¡°haha"´æ´¢ÔÚ³£Á¿Çø£¬³ÌÐò½áÊø²ÅÊÍ·Å
char p[] = "haha"; ´æ´¢ÔÚÕ»ÉÏ£¬º¯Êý½áÊø¾ÍûÁË
p[1][4]ÊÇ×Ö·û£¬ÓÃ%c

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  struct hostent *hp; 
char AlarmDevIP[20];  
  int x2;

hp = gethostbyname("www.google.com");
if (hp)
{ ......

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