#Add two integers and print the result

.data
num1:   .word 10        # first number
num2:   .word 20        # second number
result:.word 0         # to store the sum

.text
.globl main

main:
    lw   $t0, num1      # load num1 into $t0
    lw   $t1, num2      # load num2 into $t1

    add  $t2, $t0, $t1  # $t2 = $t0 + $t1

    sw   $t2, result   # store result in memory

    # print the result
    li   $v0, 1         # syscall: print integer
    move $a0, $t2       # value to print
    syscall

    # exit program
    li   $v0, 10        # syscall: exit
    syscall

#=====================================================================
#Add Two User-Input Numbers (MARS)
.data
prompt1: .asciiz "Enter first number: "
prompt2: .asciiz "Enter second number: "
result:  .asciiz "Sum = "

.text
.globl main

main:
    # Ask for first number
    li   $v0, 4          # syscall: print string
    la   $a0, prompt1
    syscall

    li   $v0, 5          # syscall: read integer
    syscall
    move $t0, $v0        # store first number in $t0

    # Ask for second number
    li   $v0, 4
    la   $a0, prompt2
    syscall

    li   $v0, 5          # read integer
    syscall
    move $t1, $v0        # store second number in $t1

    # Add the two numbers
    add  $t2, $t0, $t1

    # Print result message
    li   $v0, 4
    la   $a0, result
    syscall

    # Print the sum
    li   $v0, 1          # syscall: print integer
    move $a0, $t2
    syscall

    # Exit program
    li   $v0, 10
    syscall

#=====================================================================
#Addition with Immediate Input
.text
.globl main

main:
    li   $t0, 15         # load first number into $t0

    addi $t1, $t0, 10    # $t1 = $t0 + 10 (immediate value)

    # print result
    li   $v0, 1          # syscall: print integer
    move $a0, $t1
    syscall

    # exit
    li   $v0, 10
    syscall

#=====================================================================
#user input + immediate value
.text
.globl main

main:
    # read integer from user
    li   $v0, 5
    syscall
    move $t0, $v0

    addi $t1, $t0, 5     # add immediate value 5

    # print result
    li   $v0, 1
    move $a0, $t1
    syscall

    li   $v0, 10
    syscall