Question

This is a mips assemble language code and it won't take user inpit

.data

# This data will serve as our map between the roman

# and the decimal numbers. Here, each list will

# serve as our makeshift "array", where the conversion

# from decimal to roman will be according to each indice,

# i.e. decimalNumeral[i] will dictate romanNumeral[i].

# This also will be useful when converting roman to

# decimal, as romanNumeral[i] will dictate decimalNumeral[i]

decimalNumeral: .word 1000 100 50 10 5 1 # the decimal map

romanNumeral: .asciiz "MDCLXVI" # the roman map

# Request the user for a roman numeral.

req: .asciiz "Roman Numeral: "

# The error message that will be displayed if the

# format is invalid or contains a token that is not

# a valid roman/decimal numeral.

err: .asciiz "Input contains invalid tokens or format"

.text

.globl main

main:

jal conversion

conversion:

Answer 1

Screenshot

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Program

.data

# This data will serve as our map between the roman

# and the decimal numbers. Here, each list will

# serve as our makeshift "array", where the conversion

# from decimal to roman will be according to each indice,

# i.e. decimalNumeral[i] will dictate romanNumeral[i].

# This also will be useful when converting roman to

# decimal, as romanNumeral[i] will dictate decimalNumeral[i]

decimalNumeral: .word 1000 100 50 10 5 1 # the decimal map

romanNumeral: .asciiz "MCLXVI" # the roman map

# Request the user for a roman numeral.

req: .asciiz "Roman Numeral: "

# The error message that will be displayed if the

# format is invalid or contains a token that is not

# a valid roman/decimal numeral.

err: .asciiz "Input contains invalid tokens or format"

.text

.globl main

main:
    #Prompt for roman numeral
    addi $v0,$0,4
    la $a0,req
    syscall
    #Read roman numeral
    addi $v0,$0,12
    syscall
    #Move character into a0 for function call
    move $a0,$v0
    #Address of roman array
    la $a1,romanNumeral
     #Address of decimal array
    la $a2,decimalNumeral
    #Call conversion function
    jal conversion
    #End of the program
    addi $v0,$0,10
    syscall
#Conversion function implementation
conversion:
     #First roman numeral in t0
     lb $t0,($a1)
     #Counter for index of array
     addi $t1,$0,0
#Loop until end of numeral array
Loop:
     #If not found until end call error message display part
     beq $t0,0,error
     #Check numeral array data and user input are equal
     #Equal gotto result display part
     beq $t0,$a0,result
     #Otherwise increment address for next eleemnt in numeral array
     addi $a1,$a1,1
     #Increment index
     addi $t1,$t1,1
     #Get value
     lb $t0,($a1)
     #Repeat
     j Loop
#Display decimal corresponding to roman numeral
result:
     #For ptinting next line
     addi $v0,$0,11
     addi $a0,$0,10
     syscall
     #Display decimal
     addi $v0,$0,1
     #For getting correct index of array
     mul $t1,$t1,4
     add $a2,$a2,$t1
     lw $a0,($a2)
     syscall
     j return
#Display error message
error:
     addi $v0,$0,11
     addi $a0,$0,10
     syscall
    addi $v0,$0,4
    la $a0,err
    syscall
#Return from function
return:
    jr $ra

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Output

Roman Numeral: M
1000
-- program is finished running --