.data
	str1: .asciiz "Lager"
	str2: .asciiz "Regal"
	str3: .space 10
	.byte 0xff
	.byte 0xff
.text
#convention s1 is for adresses
	or $s7, $zero , $zero #s7 is counter for sting length --strlen();--
	la $s1, str2 #LOAD ADDR FOR PASS
	jal strlen #STRLEN PASS
#make a new address(s2)added with strlen to acess the last character in the string
	la $s1, str2
	addu $s2, $s1, $s7
	jal switchletters
	j return0 #EXIT PROGRAMM C STYLE ;-)

strlen:
	lbu $a0, ($s1) #loads byte
	beqz $a0, back #jumpsback if finished
	addi $s7,$s7, 0x01 #increasing the sting length counter by 1
	addi $s1, $s1, 0x01 #increasing the position in data section by 1 byte
	j strlen

switchletters:
	lbu $a1, ($s1)
	lbu $a2, ($s2)
	sb $a2, ($s1)
	sb $a1, ($s2)
	subi $s2, $s2, 1
	addi $s1, $s1, 1
	beq $s1, $s2, return0
	j switchletters

back:	jr $ra


return0: