Question

MARS MIP assembly language quesion

Write a program that reads 3 integers, print them, stores them, and add them together and print the result

Answer 1

Answer:

.data
A: .word # Integer A
B: .word # Integer B
C: .word # Integer C
S: .word #Integer S use to store the sum of A and B
Prompt1: .asciiz "Please enter first number A: "
Prompt2: .asciiz "Please enter second number B: "
Prompt3: .asciiz "Please enter third number C: "
Result: .asciiz "The sum of A, B and C in S is : "
.text
main:
#Prompt for integers A
li $v0, 4 # Load instruction for printing the string
la $a0, Prompt1 # Load Prompt1 into $a0
syscall
#Read first integer
li $v0, 5 # Read first integer A
la $t0, A
syscall
#Store first integer A into the memory
move $t0, $v0
sw $t0, A   
  
##Prompt for integers B
li $v0, 4 # Load instruction for printing the string
la $a0, Prompt2 # Load prompt2 into $a0
syscall
#Read second integer
li $v0, 5 # Read second integer
la $t1, B # $t1 = B
syscall
#Store second integer into memory
move $t1, $v0 # Move contents in $v0 to $t0
sw $t1, B # B = value at $t1
  
##Prompt for integers C
li $v0, 4 # Load instruction for printing the string
la $a0, Prompt3 # Load prompt3 into $a0
syscall
#Read second integer
li $v0, 5 # Read second integer
la $t2, C # $t3 = C
syscall
#Store second integer into memory
move $t2, $v0 # Move contents in $v0 to $t2
sw $t2, C # C = value at $t2
  
#Add the three variables A, B and C and store it in S
la $t3, S # $t3 = S
add $t3, $t0, $t1 # $t3 = $t0 + $t1
add $t3, $t3, $t2 # $t3 = $t3 + $t2
sw $t3, S # S = value at $t3
#Display the Result prompt
la $a0, Result # Loads Output label to be printed
li $v0, 4 # Sysycall to print string
syscall
#Display the sum
lw $a0, S # $a0 = value at S
li $v0, 1 # Syscall to print integer
syscall
#Exit the program
li $v0, 10 # Load exit code to $v0
syscall

OUTPUT:
Please enter first number A: 3

Please enter second number B: 4

Please enter second number C: 2

The sum of A , B and C in S is : 9

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