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Why do subroutines help make assembly code modular?

easy📝 Conceptual Q11 of 15
ARM Architecture - Subroutines and Stack
Why do subroutines help make assembly code modular?
AThey break code into smaller, reusable parts
BThey make the code run faster by default
CThey remove the need for registers
DThey automatically optimize memory usage
Step-by-Step Solution
Solution:

  1. Step 1: Understand modularity in code

    Modular code means breaking a program into smaller, manageable pieces that can be reused.

  2. Step 2: Role of subroutines in assembly

    Subroutines allow code to be divided into reusable blocks, making it easier to manage and understand.

  3. Final Answer:

    They break code into smaller, reusable parts -> Option A

  4. Quick Check:

    Modularity = reusable parts [OK]
Quick Trick: Subroutines = reusable code blocks for easier management [OK]
Common Mistakes:
  • Thinking subroutines speed up code automatically
  • Believing subroutines remove register use
  • Assuming subroutines optimize memory without effort

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