exit的状态

下面是一个实例，来演示不通的exit值

[cpp]
#include
#include
#include

void pt_exit(int status)
{
if(WIFEXITED(status))
printf("nomal termination, exit status = %d\n",
WEXITSTATUS(status));
else if(WIFSIGNALED(status))
printf("abnomal termination, signal number = %d%s\n",
WTERMSIG(status), "");
else if(WIFSTOPPED(status))
printf("child stopped, signal number = %d\n",
WSTOPSIG(status));
}

int main(void)
{
pid_t pid;
int status;

if((pid = fork()) < 0)
printf("error: fork error.\n");
else if(pid == 0)
exit(7);

if(wait(&status) != pid)
printf("error: wait error.\n");
pt_exit(status);

if((pid = fork()) < 0)
printf("error: fork error.\n");
else if(pid == 0)
abort();

if(wait(&status) != pid)
printf("error: wait error.\n");
pt_exit(status);

if((pid = fork()) < 0)
printf("error: fork error.\n");
else if(pid == 0)
status /= 0;

if(wait(&status) != pid)
printf("error: wait error.\n");
pt_exit(status);

exit(0);
}

#include
#include
#include

void pt_exit(int status)
{
if(WIFEXITED(status))
printf("nomal termination, exit status = %d\n",
WEXITSTATUS(status));
else if(WIFSIGNALED(status))
printf("abnomal termination, signal number = %d%s\n",
WTERMSIG(status), "");
else if(WIFSTOPPED(status))
printf("child stopped, signal number = %d\n",
WSTOPSIG(status));
}

int main(void)
{
pid_t pid;
int status;

if((pid = fork()) < 0)
printf("error: fork error.\n");
else if(pid == 0)
exit(7);

if(wait(&status) != pid)
printf("error: wait error.\n");
pt_exit(status);

if((pid = fork()) < 0)
printf("error: fork error.\n");
else if(pid == 0)
abort();

if(wait(&status) != pid)
printf("error: wait error.\n");
pt_exit(status);

if((pid = fork()) < 0)
printf("error: fork error.\n");
else if(pid == 0)
status /= 0;www.2cto.com

if(wait(&status) != pid)
printf("error: wait error.\n");
pt_exit(status);

exit(0);
}