In the following code, 32 is for ASCII space character. I am facing a problem in moving inside the string:
.data
para: .asciiz " "
buffer: .space 250
ctr: .word 0
.text
.globl main
.ent main
main:addi $t3,$0,32
li $t8,1
la $a0,para
li $v0,8
syscall
li $t0,0
loop:bge $t0,$a0,exit
add $t1,$a0,$t0
lb $t2,0($t1)
beq $t2,$t3,counter
addi $t0,$t0,1
j loop
counter:addi $t8,$t8,1
addi $t0,$t0,1
j loop
exit:sw $t8,ctr
li $v0,10
syscall
.end main
I found the answer today, I was comparing the array before loading individual chars:
.data
msg: .asciiz"Enter\n"
buffer: .space 250
ctr: .word 0
.text
.globl main
.ent main
main:addi $t3,$0,32 #$t3 holds 'space'
li $t8,1
la $a0,msg
li $v0,4
syscall #$t8, is counter register
li $v0,8 #input of string para
syscall
li $t0,0 # i=0
loop: #till str[i]!=0
add $t1,$a0,$t0
lb $t2,0($t1)
beq $t2,$zero,exit
beq $t2,$t3,counter #str[i]=' ' checks and jumps to
addi $t0,$t0,1 #increment i if false
j loop
counter: addi $t8,$t8,1 #increment counter when word
addi $t0,$t0,1
j loop
exit: sw $t8,ctr
li $v0,10
syscall
.end main