#include <sys/types.h> #include <sys/wait.h>
pid_t wait (int * status);
#include <stdlib.h>
#include <unistd.h>
#include <sys/types.h>
#include <sys/wait.h>
main()
{
pid_t pid;
int status, i;
if(fork() == 0)
{
printf("This is the child process. pid =%d\n", getpid());
exit(5);
}
else
{
sleep(1);
printf("This is the parent process, wait for child...\n";
pid = wait(&status);
i = WEXITSTATUS(status);
printf("child's pid =%d . exit status=^d\n", pid, i);
}
}
This is the child process. pid=1501 This is the parent process, wait for child... child's pid =1501, exit status =5
#include <sys/types.h> #include <sys/wait.h>
pid_t waitpid(pid_t pid, int * status, int options);
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