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linux ϵͳÏÂʹÓÃC³ÌÐòʵÏÖʱÖӵĺ¯Êý

#include "stdio.h"
#include "math.h"
#include "time.h"
#define INTERVAL 1  ¶¨ÒåºêµÄʱ¼ä¼ä¸ôΪ1Ãë
//
void On_Time()  //ÿһÃ뼤·¢µÄʼþ
{
   printf("now=%s\n","JJK"); 
}
void Timer()  //ʱÖӵĺ¯Êý
{  time_t newclk,oldclk;
   while(1)
   {
     time(&newclk);
     if(abs(difftime(newclk,oldclk))>=INTERVAL)
     {
       On_Time();
     }
     oldclk=newclk;
   }
}
int main()  //Ö÷º¯Êý
{
  Timer();
}


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<assert.h> <float.h> <math.h> <stdarg.h> <stdlib.h>
<ctype.h> <limits.h& ......

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#include "stdio.h"
#include "malloc.h"
typedef int elemtype;
struct node
{
elemtype data;
struct node *next;
};
typedef struct node NODE;
NODE * creat(NODE *head)
{
NODE *p,*q;
elemtype i;
head=(NODE*)malloc(sizeof(NODE));
scanf("%d",&(head->data));
p=head;
......

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