ex42.s:

	.text
       	.globl __start
__start:			# execution starts here
	la $a0,prompt
	li $v0,4
	syscall			# display prompt
	li $v0,5
	syscall			# read first integer in $v0
	move $t1,$v0		# and then move in $t1
	la $a0,prompt
	li $v0,4
	syscall			# display prompt
	li $v0,5
	syscall			# read second integer in $v0
	move $t2,$v0		# and then move in $t2
	blt $t1,100,cond1
	j end
cond1:  blt $t2,100,cond2
	j end
cond2:  la $a0,msg		# display message
	li $v0,4
	syscall
end:
	li $v0,10		# exit
	syscall
.data
prompt:		.asciiz "Give integer: "
msg:		.asciiz "Both integers less than 100"

ex49.s:

	.text
      	.globl __start
__start:				# execution starts here
	la $a0,input			# address of word to transform
	lw $t1,0($a0)			# load word to $t1
	li $t0,0x001FF800		# mask definition
	and $t2,$t1,$t0			# masked word
	li $v0,10
	syscall
	.data
input:		.word 0xFFFFFFFF