# Author name: # Ben Bitdiddle
# Assignment number: Sample 0
# Date: 09-02-2003
# Program name: Largest of N numbers
# 
# SUMMARY 
#         This program finds the largest number in a given list of numbers.
# 
# INPUT 
#       The input to this program is a set of positive numbers entered by the
#	user.
# 
# OUTPUT 
#	The output is the largest number in the input set of numbers. 
#	In the format 'the largest = (number)'
# 
# ASSUMPTIONS 
#	The program assumes that only positive numbers are being entered.
#	After entering each number the user must press <Enter>
# 	To indicate that all the numbers have been entered the user should
#	enter a number <= 0
# 

.data
prompt:
.asciiz "enter a number (0 to quit): "
display:
.asciiz "the largest = "
crlf:
.asciiz "\n"
.text
main:
li	$a1, 0		#reset the largest
loop:
li	$v0, 4		#syscall 4 to display string message
la	$a0, prompt	#display the entry message
syscall

li	$v0, 5		#syscall 5 to read in a number
syscall

blez	$v0, break_loop	#if number entered is 0 end
blt	$v0, $a1, loop 	#is no. entered greater than the largest we have
move 	$a1, $v0	#if so replace largest

no_move:
j	loop		#get more numbers

break_loop:
li	$v0, 4
la	$a0, display	#display message
syscall

li	$v0, 1		#syscall 1 for displaying numbers
move	$a0, $a1	#display largest number
syscall

li	$v0, 4
la	$a0, crlf	#display \n some nice housekeeping
syscall