Q1: Which header file needs to be used for pthread programming ? Why we use it? (2grade) Q2: What is a lightweight processes?( 2grade) Q3: When we want to Implement pthread in c programming, what is the command to compile this programming? ( 2 grade) Q4: The data type used for storing the thread id is (2grade) Q5: Suppose we have this program : ( 2grade) Int main () i int 1; pthread_tid; pthread_create (stid, wULL, thread, NuLt); pthread_join(tid, (void );i); printf ("8d ",i); 1 a- What is the name of thread_Function? b- What is the argument of thread_Function