S.A.P Chapter 4 (4.0, 4.1)

List the 3 components in problem solving

List the 3 components in problem solving

Input

Process

Output

What is “input”?

List of things that is required by the problem

What is “process”?

Actions that need to be done to get output

What is “output”?

Outcome desired

Define algorithm

A step-by-step procedure to solve a given problem

What is used to connect symbols and to show the flow in flowchart?

Lines and arrows

What is the purpose of this symbol?

Indicates the starting or ending point of the flowchart

What is the purpose of this symbol?

It symbolize input or output

What is the purpose of this symbol?

Symbolize any process in any algorithm

What is the purpose of this symbol?

To be use when there are decisions to be made in the logic

What are the 3 basic control structures?

Sequential

Selection

Repetition

Draw a flowchart for a computer program that will get two test results from the user, calculate the average of the test results and display the calculation result.

What is the difference between pseudocode and flowchart?

Pseudocode a structured English that has been formalized to look like the high-level computer languages while flowchart shows the program logic as each task is represented by certain symbols which are the connected by lines and arrows to show the flow.

Describe the structure of pseudocode?

Begin with “Start”

Body content(input, processes, output)

End with “End”

Keywords for input

Prompt and Get

Read

Keywords for output

Display

Output

Put

Print

Write

A program is to receive three numbers from user, multiply all three numbers and display the result. Write the pseudocode..

1. Start

2. Declare variables, num1, num2, num3, result

3. Prompt and Get num1, num2, num3

4. Calculate result= num1*num2*num3

5. Display result

6. End

What is Desk-checking?

A process of tracing through the algorithm with several sample data

Algorithm can be implemented by using _________ and __________.

Pseudocode, Flowchart

Give an example of flowchart using selection

Give an example of flowchart using repetition.