Question 1 : Implement the following using operating systems . a)Write a program which takes a series of positive integers as command line arguments and then start threads for every integer n. each thread calculates sum of integers 1,,n and prints the sum. HINT: use atoi() function to convert command line argument into integers. int a=atoi(argv[i]);

b) (a*b) + (c*d) /e Create three threads, one for Addition Multiplication Division Only one thread should be created in main(). Display the results in division thread. The int values (a, b, c, d, e) should be taken from the user in main and passed on the thread created in main. The other result of each step should be passed on to the next step. The main should wait till the result is displayed and exit afterwards.