Question

Write MIPs program that will read two intergers from the user and compute for the sum and difference of the two intergers. Ask the user whether he wants to repeat the program : "[Y/y] / [N/n] ?".

Answer 1

For addition:

.data
msg1: .asciiz "Enter the first number: "
msg2: .asciiz "\nEnter the second number: "
result: .asciiz "\nThe result of addition is: "

.text
li $v0,4
la $a0,msg1
syscall

li $v0,5
syscall
move $t1,$v0

li $v0,4
la $a0,msg2
syscall

li $v0,5
syscall
move $t2,$v0

Add $t3,$t1,$t2

li $v0,4
la $a0,msg3
syscall

li $v0,1
move $a0,$t3
syscall

li $v0,10
syscall

For Subtraction:

.data

msg1: .asciiz "Enter the first number: "
msg2: .asciiz "Enter the second number: "
result: .asciiz "The result of subtraction is: "

.text

li $vo,4
la $a0,msg1
syscall

li $v0,5
syscall
move $v0,$t1

li $vo,4
la $a0,msg1
syscall

li $v0,5
syscall
move $v0,$t2

sub $t1,$t1,$t2

li $v0,4
la $a0,result
syscall

li $v0,1
move $a0,$t1
syscall

li $v0,10
syscall

For prompting the user to repeat the program:

.data
again:
.asciiz "Again (y or n)? "
answer:
.space 256

.text
.globl main
main:
li $v0, 4
la $a0, again
syscall

la $a0, answer
li $a1, 3
li $v0, 8
syscall

lb $t4, 0($a0)

beq $t4, 'y', main
beq $t4, 'Y', main

li $v0, 10
syscall