I am trying to create a mips program that prompts a user to enter values from $0.\mathrm{.}100$ until a value of $-1$ is entered. Return the average of the numbers to the calling program. I am using Mars $4\mathrm{.}5$

This is the code i have currently but its not giving me average:

$.$data

prompt: $.$asciiz "Enter a value between $0$ and $100(-1$ to stop$)$: $"$

newline: $.$asciiz $"$

$"$

invalid$\_$msg: $.$asciiz "Invalid input. Please enter a value between $-1$ and $100.$

$"$

$.$text

$.$globl main

main:

# Prepare for loop

li $t$0,0$ # i $=0$

li $t$1,0$ # sum $=0$

li $t$2,0$ # count $=0$

loop:

# Print prompt

li $v$0,4$

la $a$0,$ prompt

syscall

# Read input

li $v$0,5$

syscall

move $t$3,$ $v$0$ # Store input in $t$3$

# Check if input is sentinel value

beq $t$3,-1,$ end$\_$loop

# Check if input is valid

blez $t$3,$ invalid$\_$input

bgt $t$3,100,$ invalid$\_$input

# Add input to sum

add $t$1,$ $t$1,$ $t$3$ # Add to sum

addi $t$2,$ $t$2,1$ # Increment count

j loop

end$\_$loop:

# Calculate average

beq $t$2,$ $zero, no$\_$valid$\_$inputs

div $t$1,$ $t$2$ # Calculate average

# Print average

li $v$0,1$

move $a$0,$ $t$1$

syscall

j end$\_$program

invalid$\_$input:

# Print invalid input message

li $v$0,4$

la $a$0,$ invalid$\_$msg

syscall

j loop

no$\_$valid$\_$inputs:

# Print message for no valid inputs

li $v$0,4$

la $a$0,$ newline

syscall

j end$\_$program

end$\_$program:

# Exit program

li $v$0,10$

syscall

This was my I$/$O: Enter a value between $0$ and $100(-1$ to stop$)$: $5$

Enter a value between $0$ and $100(-1$ to stop$)$: $5$

Enter a value between $0$ and $100(-1$ to stop$)$: $5$

Enter a value between $0$ and $100(-1$ to stop$)$: $5$

Enter a value between $0$ and $100(-1$ to stop$)$: $-1$

$20$