Lecture2a- Algorithm.pdf

Question 1

What is the main purpose of writing a program?

Answer 1

To solve a problem by designing, implementing, and testing a solution.

Question 2

What are the key steps in solving a problem through programming?

Answer 2

Understand the problem
Design a solution
Consider alternatives and refine the solution
Implement the solution
Test the solution

Question 3

Why is breaking a solution into smaller pieces important?

Answer 3

It makes the solution manageable and allows for better organization, especially using object-oriented programming.

Question 4

What are the four basic software development activities?

Answer 4

Establishing requirements (What the program must do)
Creating a design (How the program will work)
Implementing the design (Writing source code)
Testing (Ensuring the program works correctly)

Question 5

What is an algorithm?

Answer 5

A step-by-step set of instructions to solve a problem, acting as a blueprint for writing a program.

Question 6

What are the steps (psuedocode) to calculate the area of a circle?

Answer 6

Get the radius.
Compute the area using the formula A = π × r × r.
Display the result.

Question 7

What is pseudocode?

Answer 7

A mix of natural language and programming concepts used to outline a solution before coding.

Question 8

What is a flowchart?

Answer 8

A diagram that represents an algorithm using symbols (e.g., rectangles for processes, diamonds for decisions).

Question 9

Describe the psuedocode for converting Celsius to Fahrenheit?

Answer 9

Declare variables: TempCelsius, TempFahrenheit.
Prompt the user for a Celsius input.
Store the user input in TempCelsius.
Calculate TempFahrenheit = (TempCelsius × 9/5) + 32.
Display the Fahrenheit value.