Question

Write a MIPS Assembly program that computes the sum of all the odd numbers from 1 ..99 and print out the answer.

Answer 1

main:     
                li      $v1, 99     # initialized v1 to 99
                li      $t1, 0          # initialized t1 to 0
loop:           
                add     $t1, $t1, $v1   # sum of odd numbers in register $t0
                addi    $v1, $v1, -2    # summing of odd numbers in reverse order
                bnez    $v1,  loop              # branch to loop if $v0 is != zero              
                li      $v1, 4          # system call code for Print String
                la      $a0, result             # load address of message into $a0
                syscall                 # print the string
        
                li      $v0, 1          # system call code for Print Integer
                move    $a0,  $t0               # move value to be printed to $a0 
                syscall                 # print sum of integers
                b       main            # branch to main

end:    li      $v0, 4          # system call code for Print String
                la      $a0, bye                # load address of msg. into $a0
                syscall                 # print the string

                li      $v0, 10         # terminate program run and
                syscall                 # return control to  system