Mips char array indexing with counter - arrays

Question

Overview of program: Input of a number 1-26, give the corresponding Capital letter too the number
My logic: Set up an Array type "structure" using .byte with chars. have a counter going through the array. once the counter is equivenlt to the input number print out the current point at the array.
This is a homework assignment so I'm not trying to "nudge" out the answer but guidance would be very helpful.
This is why where I think its going wrong. When I add 1 to the address it for some reason gives me a error. But when i add 4 it works fine? A char is supposed to take only 1 bit correct? I understand that when indexing address's of ints in an array it should be by 4.
.data
prompt: .asciiz "Enter the value of n here: "
larray: .byte 'A','B','C','D','E','F','G','H','I','J','K','L','M','N','O','P','Q','R','S','T','U','V','W','X','Y','Z'
.globl main
.text
main:
la $t1, larray # Loads Array addresss into $t1
li $v0, 4 # System call for Print String
la $a0, prompt # Load address of prompt into $a0
syscall # Print the prompt message
li $v0, 5 # System call code for Read Integer
syscall # Read N into $v0
move $t3, $v0
li $t0, 0 # Loads int 0 into $t0
loop:
beq $t0, $t3, end # Break
lw $a0, ($t1) # Loads current pointer
addi $t0, $t0, 1 # Adds one to $t0 (Counting up +1)
addi $t1, $t1, 1 # Advances to next address in the array
j loop
end:
li $v0, 11 # Print at current index
syscall
li $v0, 10 # return control to system
syscall
I did do research on how to access the char a different way, but I don't think I can implement this way because you would need it hard coded?
Link:
This is the Stack Link that I found

Answer 1

There's no need for the array or the loop. If all you want to do is find the corresponding capital letter for a single number in the range 1-26, this would suffice:
li $v0, 5 # System call code for Read Integer
syscall # Read N into $v0
addiu $v0,$v0,'A'-1 # Convert the number 1-26 to the character 'A'-'Z'
A char is supposed to take only 1 bit correct?
One byte.
When I add 1 to the address it for some reason gives me a error. But when i add 4 it works fine?
You're using the lw instruction, which loads one word (4 bytes). To load a single byte, use the lb or lbu instruction (lb is for signed bytes, lbu for unsigned).