When the user input all $5 for 3 coupons. The total charge is wrong. need help with the fix PLEASE.

.data str: .asciiz " Please enter the number of items you are purchasing (should be less than or equal to 20): " str1: .asciiz " Sorry too many items to purchase! Please enter number of items you are purchasing" str2: .asciiz " Please enter the price of item " str3: .asciiz " Please enter the number of coupons that you want to use. " str4: .asciiz " Too many coupons! Please enter the number of coupons that you want to use." str5: .asciiz " Please enter the amount of coupon " str6: .asciiz " This coupon is not acceptable" str7: .asciiz " Your total charge is: $" str8: .asciiz " Thank you for shopping with us." str9: .asciiz ":\t"

priArr: .word 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 couArr: .word 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 .text

main: li $t1, 20 #input can't be greater than 20 items li $t2, 1 #item counter (starting at 1) li $t3, 0 #loop counter li $t5, 10 #loads 10 into t5 la $s0, priArr #loads address of Price Array to $s0 la $s1, couArr #loads address of Coupon Array to $s1 li $v0, 4 #asks for input la $a0, str syscall

li $v0, 5 #load integer syscall

add $s3, $0, $v0 #adds input to $s3 bgt $s3, $t1, error1 ble $s3 0, error1 #if $s3 > $t1 --> error1 add $a1, $s3, $0 #adds input to $a1 (limit)

jal FillPriceArray #jumps to subroutine to fill array with prices add $s2, $0, $v1 #adds price sum to s2

la $s0, priArr #points pointer to first location of arr1 li $v0, 4 #asks for how many coupons la $a0, str3 syscall

li $v0, 5 #loads integer into $v0 syscall

bgt $v0, $s3, error2 #if input > limit, go to error add $t4, $v0, 0 #adds input to t4 add $a3, $t4, $0 #adds input to a3

jal FillCouponArray #jumps to subroutine to fill array with coupon add $s5, $v1, $0 #adds coupon input to s5 sub $t7, $s2, $s5 #subtracts price sum and coupons and puts it into t7

li $v0, 4 #prints output la $a0, str7 syscall

li $v0, 1 #prints dollar amount add $a0, $t7, $0 syscall li $v0, 4 #prints content la $a0, str8 syscall

exit: li $v0, 10 syscall

FillPriceArray: li $t0, 10 #adds limit($a1) to $t0 li $t1, 1 #adds counter to $t1 li $t2, 0 #adds loop counter to $t2 add $t3, $a1, $0 #adds input to t3

read: beq $t3, $t2, end #if $a1 (counter) = $t2 , return to the previous address in main li $v0, 4 #asks for price of item la $a0, str2 syscall

li $v0, 1 #prints counter add $a0, $t1, $0 syscall

li $v0, 4 #prints colon and tab la $a0, str9 syscall

li $v0, 5 #loads integer into $v0 syscall sw $v0, 0($s0) #stores the integer into array1 add $t1, $t1, 1 #adds 1 to counter add $t2, $t2, 1 #adds 1 to loop counter add $s0, $s0, 4 #increments array add $t4, $t4, $v0 #adds number to sum j read end: add $v1, $t4, $0 jr $ra

FillCouponArray: li $t0, 10 #adds 10 into t0 li $t1, 1 #adds counter to $t1 li $t2, 0 #adds loop counter to $t2 add $t4, $a3, $0 #adds coupon input to t4

read1: beq $t4, $t2, end1 #beg of loop lw $v0, 0($s0) #stores word from price array into $v0 // might have to move outside loop add $t5, $0, $v0 #stores price into $t5 li $v0, 4 #outputs please enter amount of coupon la $a0, str5 syscall

li $v0, 1 #prints counter add $a0, $t1, $0 syscall li $v0, 4 #prints colon and tab la $a0, str9 syscall

li $v0, 5 #loads integer into $v0 syscall add $t3, $v0, $0 #adds input to t3 bgt $t3, $t0, error3 #if input is > 10, go to error\ bgt $t3, $t5, error3 #if input is > price number sw $t3, 0($s1) #stores the integer into array1 add $t3, $t3, $v0 #adds number to sum

increment: add $t1, $t1, 1 #adds 1 to counter add $t2, $t2, 1 #adds 1 to loop counter add $s0, $s0, 4 #increments array add $s1, $s1, 4 #increments array 2 j read1 end1: add $v1, $t3, $0 #adds coupon sum to v2 jr $ra #returns back to addresss

error1: li $v0, 4 #outputs too many items to purchase la $a0, str1 syscall j main

error2: li $v0, 4 #outputs too many coupons la $a0, str4 syscall jr $ra

error3: li $v0, 4 #outputs coupon is not acceptable la $a0, str6 syscall sw $0, 0($s1) j increment

Sample Output:

Please enter the number of item you are purchasing(should be less than or equal to 20)

21

Sorry too many items to purchase!! Please enter number of items you are purchasing

3

Please enter the price of item 1

10

Please enter the price of item 2

10

Please enter the price of item 3

20

Please enter the number of coupons that you want to use.

4

Too many Coupons!! Please enter the number of coupons that you want to use.

3

Please enter the amount of coupon 1

15

This coupon is not acceptable

Please enter the amount of coupon 2

$5

Please enter the amount of coupon 3

$5

Your total charge is: $30

Thank you for shopping with us.