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In the following code I create some number of threads, and each threads sleeps for some seconds. However my main program doesn't wait for the threads to finish, I was under the assumption that threads would continue to run until they finished by themselves. Is there someway of making threads continue to run even though the calling thread finishes. #include <pthread.h> #include <iostream> #include <cstdio> #include <cstdlib> int sample(int min,int max){ int r=rand(); return (r %max+min ); } void *worker(void *p){ long i = (long) p; int s = sample(1,10); fprintf(stdout,"\tid:%ld will sleep: %d \n",i,s); sleep(s); fprintf(stdout,"\tid:%ld done sleeping \n",i,s); } pthread_t thread1; int main(){ int nThreads = sample(1,10); for(int i=0;i<nThreads;i++){ fprintf(stderr,"\t-> Creating: %d of %d\n",i,nThreads); int iret1 = pthread_create( &thread1, NULL, worker, (void*) i); pthread_detach(thread1); } // sleep(10);//work if this is not commented out. return 0; } Thanks Edit: Sorry for not clarifying, is it possible without explicitly keeping track of my current running threads and by using join.

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