9.1 consider the following c-like program: void swap(int[] list, int i, int j) { int temp = list[i]; list[i] = list[j]; list[j] = temp; } void main() { int x[3] = {5, 2, 4}; swap(x, 1, 2); } what is the final value of the array x for each of the following parameter passing assumptions? (a) argument x is passed by vale. (b) argument x is passed by reference. (c) argument x is passed by vale-result.

Write a new lc-3 trap subroutine (i. e. a subroutine that will be invoked via the trap instruction) that will receive a numeric digit entered at the keyboard (i. e. an ascii character), echo it to the screen, and return in r0 the corresponding numeric value: so if the user types the digit '7', the character '7' will appear on the screen, but the value returned in r0 will be b0000 0000 0000 0111 (#7) you may not use any trap calls in your code - you must implement the "polling" code that interrogates the keyboard status and data registers. ; getnum_tsr ; a subroutine for obtaining a numeric value ; given ascii numeric digit input to keyboard. ; the numeric digit is echoed to the console (e. g. '7' = b0000 0000 0011 0111), ; but the value returned in r0 is the actual numeric value ; corresponding to the digit (e. g. b0000 0000 0000 0111 =