c - Thread created (detached) never executed -


i have written code:

void* th (void* arg) {     sleep(1);     for(int i=0; i<1000;i++)     {     fprintf(stderr,"%d\t",i);     }     pthread_exit(null); }  int main(int argc, char** argv) {     pthread_t thread;     pthread_attr_t attr;     pthread_attr_init(&attr);     pthread_attr_setdetachstate(&attr,pthread_create_detached);     pthread_create(&thread,&attr,th,null);     pthread_attr_destroy(&attr);     return 0; }

the detach state should make thread not joinable, should run after main process terminated.but doesn't print numbers, see thread terminated without printing stderr.
why isn't detached thread executed?

a return main thread equivalent exit of whole process, process exit before thread may print anything. use pthread_exit instead terminate thread.


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