Blanks Filled

The outline is completed below. Input and output is left out. Detecting the end of input by testing for a sentinel value is usually regarded as poor style.

main:   
        li    $v1,0            # zero the sum
loop:
        . . . .                # prompt the user for input
        li    $v0,5            # read the integer
        syscall                # into $v0

        beq   $v0,-999,done    # while ( $v0 =/= -999 )
        blt   $v0,-32,out         # less than -32
        bgt   $v0,32,out          # greather than 32

        addu  $v1,$v1,$v0         # if in range add           
                                  # else skip
out:    b     loop        

done:   . . . .                # write out result