7 Questions
What is the purpose of the START and STOP statements in algorithm pseudocode?
To indicate the beginning and end of the algorithm
Which symbol in a flowchart represents the terminal or end of the process?
⭤
In algorithm pseudocode, what does the 'READ' statement do?
Reads input from the user
What is the purpose of the 'IF-ELSE' statement in algorithm pseudocode?
To execute different statements based on a condition
What is the purpose of the 'REPEAT UNTIL' statement in algorithm pseudocode?
To repeat a set of statements while a condition is true
Write algorithm pseudocode and flowchart for the following problem: Print on screen 'Welcome to my program' to welcome the user, read from keyboard the user first name, finally write on screen a 'Nice to meet you Mr. First Name' to greet user.
Algorithm pseudocode START
- Write 'WELCOME TO MY PROGRAM'
- Write 'What’s your name.'
- Read FirstName
- Write 'Nice to meet you', FirstName
- Stop
Flowchart: start -> write 'Welcome to my program' -> write 'What’s your name.' -> read FirstName -> write 'Nice to meet you', FirstName -> stop
Write algorithm pseudocode and flowchart for the following problem: Problem: find the area of a rectangle.
Algorithm pseudocode START
- Read length
- Read width
- Set area = length * width
- Write area
- Stop
Flowchart: start -> read length -> read width -> set area = length * width -> write area -> stop
Study Notes
Algorithm Pseudocode and Flowcharts
- The START and STOP statements in algorithm pseudocode indicate the beginning and end of the program.
Flowchart Symbols
- The terminal or end of the process in a flowchart is represented by the oval shape symbol.
READ Statement
- The 'READ' statement in algorithm pseudocode is used to read input from the user or keyboard.
Conditional Statements
- The 'IF-ELSE' statement in algorithm pseudocode is used to make decisions based on conditions and execute different blocks of code accordingly.
Looping Statements
- The 'REPEAT UNTIL' statement in algorithm pseudocode is used to repeat a block of code until a specified condition is met.
Algorithm Pseudocode and Flowchart Examples
Welcome Program
- Algorithm pseudocode:
- START
- PRINT "Welcome to my program"
- READ first_name
- PRINT "Nice to meet you Mr. " + first_name
- STOP
- Flowchart:
- Oval shape: START
- Rectangle: PRINT "Welcome to my program"
- Diamond: READ first_name
- Rectangle: PRINT "Nice to meet you Mr. " + first_name
- Oval shape: STOP
Rectangle Area Problem
- Algorithm pseudocode:
- START
- READ length
- READ width
- area = length * width
- PRINT "The area of the rectangle is " + area
- STOP
- Flowchart:
- Oval shape: START
- Rectangle: READ length
- Rectangle: READ width
- Diamond: area = length * width
- Rectangle: PRINT "The area of the rectangle is " + area
- Oval shape: STOP
Test your knowledge of algorithms, pseudocode, and flowcharts with this review quiz. The quiz covers topics such as algorithm design, writing pseudocode, and creating flowcharts for problem-solving. Get ready for your CS 101 final exam with these practice questions and answers!
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