Question

When can we use formal methods to verify code?

1) When we want to ensure the correctness of the code
2) When we want to improve the performance of the code
3) When we want to add new features to the code
4) When we want to test the code

Answer 1

Formal methods can be used to ensure the correctness of code, but not for improving performance or adding new features. Testing is a separate process that focuses on validating code behavior.

Step-by-step explanation:

Formal methods can be used to verify code when we want to ensure the correctness of the code. By using formal methods, we can apply logical reasoning and mathematical techniques to prove that the code behaves as intended.

Formal methods are not typically used to improve the performance of the code or add new features. These aspects usually require other techniques such as profiling and debugging, or the use of specific development methodologies like agile or iterative.

Testing is a different process altogether and does not involve the formal methods used for code verification. Testing focuses on validating individual parts of the code and determining if they produce the expected results.