# a SAL program to add up the first n integers,
# where n is a positive integer entered by the user.

		.data
# strings for making the output look nice
str1:		.asciiz	"Please enter a positive integer: "
str2:		.asciiz	"The sum of the first "
str3:		.asciiz	" integers is "
newline:	.byte	'\n'

# variable declarations
n:		.word	0	# user entered integer
sum:		.word	0	# running sum of the first n integers
i:		.word	0	# integer counter, 0 to n
tmp:		.word		# used for comparisons

		.text
__start:	puts	str1
		get	n
		put	newline

for:		sub	tmp,n,i
		bltz	tmp,endfor
		add	sum,sum,i
		add	i,i,1
		b	for

endfor:		puts	str2
		put	n
		puts	str3
		put	sum
		put	newline
		done