#Copyright 2021 by John Bowman
#Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), 
#to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, 
#and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:
#The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.
#THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 
#FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, 
#WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

#This program performs basic arithmetic operations on two inputs

#Developed using MARS 4.5 MIPS Assembler and Runtime Simulator

.data
lblFirst: .asciiz "Enter a number: "
lblSecond: .asciiz "Enter another number: "
lblAdd: .asciiz "The sum of the two numbers is: "
lblSub: .asciiz "\nThe difference of the two numbers is: "
lblMult: .asciiz "\nThe product of the two numbers is: "
lblDiv: .asciiz "\nThe quotient of the two numbers is: "

.text

#Ask for first number
li $v0, 4
la $a0, lblFirst
syscall

#Receive first number from console
li $v0, 5
syscall

#Fetch return value and store in $t0
move $t0, $v0

#Ask for second number
li $v0, 4
la $a0, lblSecond
syscall

#Receive second number from console
li $v0, 5
syscall

#Fetch return value and store in $t1
move $t1, $v0

#Add two values
add $t2, $t0, $t1

#Subtract two values
sub $t3, $t0, $t1

#Multiply two values
move $t4, $t0
mult $t4, $t1
mflo $t5

#Divide two values
move $t6, $t0
div $t6, $t1
mflo $t6

#Print results
li $v0, 4
la $a0, lblAdd
syscall

li $v0, 1
la $a0, ($t2)
syscall

li $v0, 4
la $a0, lblSub
syscall

li $v0, 1
la $a0, ($t3)
syscall

li $v0, 4
la $a0, lblMult
syscall

li $v0, 1
la $a0, ($t5)
syscall

li $v0, 4
la $a0, lblDiv
syscall

li $v0, 1
la $a0, ($t6)
syscall

#Terminate
li $v0, 10
syscall