.data
  prompt: .asciiz "Enter a integer: "
  sumPositivePrompt: .asciiz "\nSum Positives: "
  sumNegativePrompt: .asciiz "\nSum Negatives: "
.text

main: # main

  # initiate empty registers to hold positive and negative values
  li $s0, 0 # positive values
  li $s1, 0 # negative values

  j loop # start the loop


loop: # ask for input on loop
  li $v0, 4 # show prompt
  la $a0, prompt
  syscall

  li $v0, 5 # read integer
  syscall

  beqz $v0, end # end program if zero is entered
  bgtz $v0, storePositive
  bltz $v0, storeNegative

storePositive:
  add $s0, $s0, $v0
  j  loop

storeNegative:
  add $s1, $s1, $v0
  j  loop

end:

  li $v0, 4
  la $a0, sumPositivePrompt
  syscall

  # print contents of register
  move $a0, $s0
  li $v0, 1
  syscall

  li $v0, 4
  la $a0, sumNegativePrompt
  syscall

  # print contents of register
  move $a0, $s1
  li $v0, 1
  syscall

  li $v0, 10 #exit program
  syscall