## String count program.  Count includes the 'newline' character
# from string entered at prompt
	.data
msg1:	.asciiz "Enter a string: \n "
msg2:	.asciiz "# of bytes: \n "

buff:	.space 64


	.text

## entry point of program must be called 'main'
main:	addiu $v0, $0, 4	# syscall 4 (print_str)
# prompt user
        la $a0 msg1
	syscall
	addiu $v0, $0, 4

#get string from user
        la  $a0 buff
        addiu $a1 $0  64
        addiu  $v0 $0  8           #syscall 8 (read str)
	syscall 

        jal  strlen            # $a0 has address of string

# echo string
        move $s0, $v0          # save integer count
        la  $a0, msg2
        addiu $v0 $0  4
        syscall

        add $a0, $0, $s0       # print integer
        addiu $v0, $0, 1
	syscall
        
#exit
	addiu $v0 $0 10
	syscall			# syscall 10 (exit)
        

## address passed in $a0

strlen:
	addu $v0, $0, $0     # zero out count
loop:   lb $t0, 0($a0)
        beq $t0,$0, strlen_exit
        addiu $a0, $a0, 1     # increment to next byte
        addiu $v0, $v0, 1     # increment count
        beq $0,$0, loop

strlen_exit:
        jr  $ra               #return


   
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