Question

Write a simple MIPS Assembly program to average 3 integers. Make sure to read in three numbers from the user instead of hard coding them. To divide the sum by 3 you may use div $t0, $t0, 3 where register $t0 conatins the sum of the 3 integers.

.data
prompt1: .asciiz " Please enter an integer: "
prompt2: .asciiz " Please enter an integer: "
prompt3: .asciiz " Please enter an integer: "
result: .asciiz "The average of three number is: "

       .text

main:

  
   li $v0, 4 # syscall to print string
   la $a0, prompt1
   syscall

   li $v0, 5 # syscall to read an integer
   syscall
   move $t0, $v0 # move number to read into $t0

   li $v0, 4
   la $a0, prompt2
   syscall

   li $v0,5
   syscall
   move $t1, $v0

   li $v0, 4
   la $a0, prompt3
   syscall

   li $v0,5
   syscall
   move $t2, $v0

   # add all integers to $t3
   add $t3, $t0, $t1
   add $t3, $t2, $t3
   li $v0, 1
   syscall

   # Read the sum
   li $v0, 3
   syscall
   move $t3, $v0

   # Divide Sum / count
   div $t4, $t3, 3
   #li $v0, 1
   #move $a0, $t4

   #print out the average
   move $a0, t4
   li $v0, 1
   la $a0, result
   syscall

   exit:
   li $v0, 10
   syscall

Whats the problem?

Answer 1

Greetings!!

Code:

#DATA SEGMENT

.data

prompt1: .asciiz " Please enter an integer: "

prompt2: .asciiz " Please enter an integer: "

prompt3: .asciiz " Please enter an integer: "

result: .asciiz "The average of three number is: "

#CODE SEGMENT

.text

main:

   #DISPLAY PROMPT1

   li $v0, 4                    #parameter to print string

   la $a0, prompt1        #address of prompt1

   syscall                      #syscall for print string

  

   #READ 1ST NUMBER

   li $v0, 5                    #parameter to read an integer

   syscall                      #syscall for read number

   move $t0, $v0          #move number read to register $t0

  

   #DISPLAY PROMPT2

   li $v0, 4                    #parameter to print string

   la $a0, prompt2        #address of prompt2

   syscall                      #syscall for print string

  

   #READ 2ND NUMBER

   li $v0,5                     #parameter to read an integer

   syscall                      #syscall for read number

   move $t1, $v0          #move number read to register $t1

  

   #DISPLAY PROMPT3

   li $v0, 4                    #parameter to print string

   la $a0, prompt3        #address of prompt2

   syscall                      #syscall for print string

  

   #READ 3RD NUMBER

   li $v0,5                     #parameter to read an integer

   syscall                      #syscall for read number

   move $t2, $v0          #move number read to register $t2

  

   # ADD ALL INTEGERS TO $T3

   add $t3, $t0, $t1       #sum of first 2 numbers into t3

   add $t3, $t2, $t3       #sum of 3 numbers into t3

  

   # DIVIDE SUM / COUNT

   div $t4, $t3, 3           #calculate the average

  

   #DISPLAY MESSAGE "THE AVERAGE OF..."

   li $v0, 4                    #parameter for display string

   la $a0, result             #address of the string

   syscall                      #system call for display string

  

   #PRINT OUT THE AVERAGE

   move $a0,$t4           #load the average into register a0 for display

   li $v0, 1                    #parameter for display number

   syscall                      #system call for display number

  

   #TERMINATE THE EXECUTION  

   li $v0, 10

   syscall

Output screenshot:

Hope this helps