1. Find the first four values of the variable y in hexadecimal or binary as the code in Listing 6.12 is run. Listing 6.12 #include void main (void) { } WDTCTL= WDTPW|WDTHOLD; int a = 4; int mask 0x0003; int y = 0xFFFF; while(a) { a = 1; y = (y^mask) &a; } while (1); I