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http://blog.chinaunix.net/u1/53053/showart_425197.html
#include <sys/types.h> /* ÌṩÀàÐÍpid_tµÄ¶¨Òå */
#include <sys/wait.h>
pid_t wait(int *status)
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pid = wait(NULL);
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/* wait1.c */
#include <sys/types.h>
#include <sys/wait.h>
#include <unistd.h>
#include <stdlib.h>
main()
{
pid_t pc,pr;
pc=fork();
if(pc<0) /* Èç¹û³ö´í */
printf("error ocurred!\n");
else if(pc==0){ /* Èç¹ûÊÇ×Ó½ø³Ì */
printf("This is child process with pid of %d\n",getpid());
sleep(10); /* ˯Ãß10ÃëÖÓ */
}
else{ /* Èç¹ûÊǸ¸½ø³Ì */
pr=wait(NULL); /* ÔÚÕâÀïµÈ´ý */
printf("I catched a child process with pid of %d\n"),pr);
}
exit(0);
}
±àÒë²¢ÔËÐÐ:
$ cc wait1.c -o wait1
$ ./wait1
This is child process with pid of 1508
I catched a child process with pid of 1508
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