Question

Check a number if the Database. Write MIPS assembly code for the following requirements.

Given the following code for the data segment.

.data

Database: .word 1,2,3,4,5,6,7,8,9,10

Ask user to type in a random integer number using syscall #5. Check if this number is within the database or not, print out "number found!" if the number was foudn in the database, print out "No such number found in database!" if not.

Answer 1

Code:

.data  
   prompt: .asciiz "Enter a number: "
   found: .asciiz "number found!"
   notfound: .asciiz "No such number found in database!"
   Database: .word 1, 2, 3, 4, 5, 6, 7, 8, 9, 10
.text
   .globl main
main:
   # prompting user to enter a random number
   la $a0, prompt
   li $v0, 4
   syscall
  
   # reading number
   li $v0, 5
   syscall # number is stored in $v0
  
   # address of Database in $t1
   la $t1, Database
   li $t0, 0        # $t0 = 0, corresponds to i = 0
   li $t3, 10       # size of Database
  
   Loop:
       lw $t2, ($t1)
       beq $v0, $t2, printFound   # if Databasep[i] == number entered by user
       addi $t0, $t0, 1       # i++
       addi $t1, $t1, 4       # increment the array
       beq $t0, $t3, printNotFound   # if i == size, print not found
       j Loop
  
   # print not found message
   printFound:
   la $a0, found
   li $v0, 4
   syscall
   j exit       # exit
  
   printNotFound:
   la $a0, notfound
   li $v0, 4
   syscall
  
   exit:
   li $v0, 10
   syscall

OUTPUT: