Programming assignment: 1. Write a program that uses UNIX system calls to "ping-pong" a byte between two processes over a pair of pipes, one for each direction. Measure the program's performance, in exchanges per second. 2. Answer Memory Allocation Question below void func() { } int x; // declares an integer on the stack void func() { } int x (int *)malloc(sizeof (int)); #include void malloc(size_t size); Note: allocating and freeing memory is fraught with possible errors. Can you explain? See text section 14.4 for important caveats. double d = (double *)malloc(sizeof (double)); int xmalloc (10 * sizeof (int)); printf("%d ", sizeof (x)); int x[10]; printf("%d ", sizeof(x));