CODEWITHSUNDEEP
assemblymips
ort23
ort23

Reputation: 83

how to find character in string in MIPS assembly

I'm new to MIPS assembly, I'm trying to make a program that finds the character just before "?"

However, for example when I enter input like " abc?", output is "c?". I can't find my mistake.

code is here:

.data 

buffer: .space 1024
.text
.globl main

main:

la $a0,buffer 
li $v0,8 
syscall 


la $t1,buffer 


loop: 
lb $t2,($t1) 
beq $t2,'?',loop1 
add $t1,$t1,1 
j loop

loop1:
sub $t1,$t1,1
move $a0,$t1 
li $v0,4 
syscall 

li $v0,10 
syscall

Upvotes: 1

Views: 9276

Answers (1)

Michael
Michael

Reputation: 58447

You're using the print_string syscall, which won't stop until it finds a NUL terminator.

If you only want to print a single character it would be better to use the print_character syscall (11); i.e. replace

move $a0,$t1 
li $v0,4

with

lb $a0,($t1)
li $v0,11

Upvotes: 2

Related Questions