.globl main 

.text

main:
  # print user input
  li $v0, 4
  la $a0, enter_num
  syscall

  # get input from user and set argument
  li $v0, 5
  syscall
  move $a1, $v0

  la $a0, arr          # $a0 based address of array
  #li $a1, 1           # $a1 number to be found (checked) - change the value (7) to test
  li $a2, 6            # $a2 max array index to be checked - change the value (3) to test
  li $s0, 0            # set counter to 0
  jal lookup           # hop to lookup function

  # print out result
  li $v0, 1     # print_int syscall code = 1
  move $a0, $s0 # load integer into $ao
  syscall

  # print newline
  li $v0, 4
  la $a0, newline
  syscall

  # exit
  li $v0, 10
  syscall

lookup:
  addi $t0, $a2, 1     # store one higher value

  # loop to find index
  bne $s0, $t0, dsetoob # set out of bounds if we overrun array
  li $s0, -1            # index is oob, set to -1
  jr $ra                # jump back to ra in main
  dsetoob:              # label for if we dont want to set oob

  # find current array value
  addi $t1, $s0, 0       # load index into $t1
  sll $t1, $t1, 2        # multiply the offset
  add $t1, $t1, $a0      # add the offset to the base address
  lw $t2, 0($t1)         # get current array value: aka arr[$s0]

  bne $a1, $t2, dontjump # check if this is the value we are looking for
  jr $ra                 # return to main function if the values match
  dontjump:              # continue loop if they match
  addi $s0, $s0, 1       # incriment counter
  j lookup               # back to beginning of loop



.data
arr: .word 5, 2, 1, 4, 6, 3
enter_num: .asciiz "Enter number to be found: "
newline: .asciiz "\n"
str_found:	.asciiz	"found"
str_not_found:	.asciiz	"not_found"