11 replies to this topic

[amani]

hi
i have a qustion in MIPS program and i need the answer

write a MIPS program that reads an integer x and calculate the sum of integers

x+(x+1)+(X+2)+(x+4)+(x+8) +...... , stop when the sum is greater than 10000 ,

then print the sum and the count of integers included in the sum.


thanks alot ,

[Alexander]

What is your question? Where are you stuck at in your code (feel free to post what you have no matter how simple)

[dargueta]

We'll gladly help with homework, but we won't do it for you. Do you have pseudocode or at least some idea of what you need to do?

[amani]

i tried to solve it but i think there's some mistake

and this is which i tried

 .text

main: 


li $v0,5  

syscall

move $t0,$v0


li $t0,1

li $t1,2

li, $t2,10000


mul $s1,$t0,2

add $s2,$s0,1

add $s3,$s0,$s2

add $s4,$s4,1


loop: bgt $s3,$t2,l1



la $a0,msg 

li $v0,4

syscall

li $v0,1 

move $t2,$s3

syscall


la $a0,count 

li $v0,4

syscall

li $v0,1 

move $t2,$s4

syscall



l1:


li $v0,10 

syscall

.data

msg: .asciiz "the sum of  integers= \n" 

count: .asciiz "the count of  integers= \n \n" 


 .byte 0

[dargueta]

A few things:

Your biggest mistake:

li $v0,5

syscall

[B][COLOR="red"]move $t0,$v0[/COLOR][/B]

[B][COLOR="red"]li $t0,1[/COLOR][/B]

li $t1,2

li, $t2,10000

You read an integer from the console, put it in $t0, then immediately overwrite $t0 with 1.

Another thing - you forgot the terminating null for your first message:

.data

msg: .asciiz "the sum of  integers= \n"

[B][COLOR="red"].byte 0[/COLOR][/B]


count: .asciiz "the count of  integers= \n \n" 

.byte 0

These are just some things I noticed at a glance. Fix them, then we'll see what happens.

[amani]

dargueta said:

A few things:

Your biggest mistake:

li $v0,5

syscall

[B][COLOR="red"]move $t0,$v0[/COLOR][/B]

[B][COLOR="red"]li $t0,1[/COLOR][/B]

li $t1,2

li, $t2,10000

You read an integer from the console, put it in $t0, then immediately overwrite $t0 with 1.

Another thing - you forgot the terminating null for your first message:

.data

msg: .asciiz "the sum of  integers= \n"

[B][COLOR="red"].byte 0[/COLOR][/B]


count: .asciiz "the count of  integers= \n \n" 

.byte 0

These are just some things I noticed at a glance. Fix them, then we'll see what happens.

I've corrected the error, but

The program does not work with me
I have this message appear



Something else I would like to ask
after each message we must put .byte 0 ??

[dargueta]

Question 1: I forgot to mention you need .globl main at the beginning of your program to tell SPIM that you want that function to be globally usable.
Question 2: Yes.

What's this program supposed to do?

[amani]

show the output for the code above

[dargueta]

Did you add .globl main at the beginning like I told you to?

[amani]

Immm, No i didn't

i get the correct answer.

thanks alot >>:)

[dargueta]

No problem.

[Alexander]

I'm glad I helped.