Defensive Programming

Question 1

What is a Software Crisis?

Answer 1

Difficult to write useful & efficient computer programs in the required time because of rapid increase in computer power and complexity of problems that need to be solved.

Question 2

What is Spaghetti Code?

Answer 2

Unstructured and difficult to maintain source code.

Question 3

Defensive Programming

Answer 3

Ensure the continuity of a piece of software in spite of unforeseeable usage of said software.

Question 4

What are Invariants?

Answer 4

Conditions that do not vary.

Question 5

Types of Invariants?

Answer 5

Loop invariants
Class invariants
Method invariants

Question 6

Loop invariant

Answer 6

True at the beginning of each loop

Question 7

Class Invariants

Answer 7

True before and after each method call

Question 8

Method Invariants

Answer 8

Pre- and post conditions

Question 9

What is Structured Programming?

Answer 9

component-level design technique which uses only small set of programming constructs

Question 10

What are Code Guides

Answer 10

Set of rules to which programmers must adhere