multithreading - Creating multiple threads in C -

i beginner in programming using c.for college project want create multi-threaded server application multiple clients can connect , transfer there data can saved in database.

after going through many tutorials got confused how create multiple threads using pthread_create.

somewhere done like:

pthread_t thr;  pthread_create( &thr, null ,  connection_handler , (void*)&conn_desc); 

and somewhere like

 pthread_t thr[10];   pthread_create( thr[i++], null ,  connection_handler , (void*)&conn_desc); 

i tried implementing both in application , seems working fine. approach of above 2 correct should follow. sorry bad english , description.

both equivalent. there's no "right" or "wrong" approach here.

typically, see later when creating multiple threads, array of thread identifiers (pthread_t) used.

in code snippets, both create single thread. if want create 1 thread, don't need array. declaring variable(s) didn't use. it's harmless.

in fact, if don't need thread id purpose, (for joining or changing attributes etc), can create multiple threads using single thread_t variable without using array.

the following

pthread_t thr; size_t i;  for(i=0;i<10;i++) {    pthread_create( &thr, null , connection_handler , &conn_desc); } 

would work fine. note cast void* unnecessary (last argument pthread_create()). data pointer can implicitly converted void *.