mips-7.asm

.data
string1: .asciiz "Enter a number : "
endLine: .asciiz "\n"
string2: .asciiz "Addition result is  : "
string3: .asciiz "Substraction result is : "
string4: .asciiz "Your second number is greater than your first number and then you can not sub these two numbers : "

.text
main:

j EnteraNumber

EnteraNumber:
li $v0,4
la $a0,string1
syscall

li $v0,5
syscall
move $t0,$v0

li $v0,4
la $a0,string1    #cout<<Enter a number
syscall

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




beq $t0,$t1, Addition
j Substraction

Addition:

add $t2,$t1,$t0
li $v0,4
la $a0,string2    #cout<<Addition result is 
syscall

li $v0,1
move $a0,$t2
syscall
j end_label


Substraction:
bgt $t1,$t0, EnteraNumber2
j SUB2

SUB2:
sub $t2,$t0,$t1
li $v0,4
la $a0,string3    #cout<<Addition result is 
syscall

li $v0,1
move $a0,$t2
syscall
j end_label



EnteraNumber2:

li $v0,4
la $a0,string4
syscall

li $v0,4
la $a0,endLine
syscall

li $v0,4
la $a0,string1
syscall

li $v0,5
syscall
move $t0,$v0

li $v0,4
la $a0,string1    #cout<<Enter a number
syscall

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


end_label:
li $v0, 10        #exit
syscall