Podcast
Questions and Answers
What is the output when the input number is exactly 10?
What is the output when the input number is exactly 10?
- number is greater than 10
- number is not a valid input
- number is equal to 10 (correct)
- number is less than 10
What occurs when the input number is greater than 10 in the provided structure?
What occurs when the input number is greater than 10 in the provided structure?
- Flowchart ends unexpectedly
- Output indicates the number is less than 10
- Output states the number is greater than 10 (correct)
- Output stops without any message
How does the use of AND and OR operators affect decision-making in the nested logic?
How does the use of AND and OR operators affect decision-making in the nested logic?
- They only apply to one specific logic branch.
- They simplify the decision-making process.
- They complicate the decision-making with more branches. (correct)
- They eliminate the need for any decision structure.
What is the significance of the order of logic in nested selection structures?
What is the significance of the order of logic in nested selection structures?
What will happen if the number entered is outside the specified range in the AND condition example?
What will happen if the number entered is outside the specified range in the AND condition example?
What is the primary purpose of a selection structure in programming?
What is the primary purpose of a selection structure in programming?
Which selection structure is best described as offering a single outcome based on a condition?
Which selection structure is best described as offering a single outcome based on a condition?
In a dual-alternative selection structure, which option describes the output when a number input is exactly 10?
In a dual-alternative selection structure, which option describes the output when a number input is exactly 10?
What is the minimum numeric grade needed to receive a letter grade of B?
What is the minimum numeric grade needed to receive a letter grade of B?
Which logical operators can be utilized in a selection structure?
Which logical operators can be utilized in a selection structure?
Which of the following grades corresponds to the letter grade of C?
Which of the following grades corresponds to the letter grade of C?
What type of selection structure allows for different paths to be taken based on a value range?
What type of selection structure allows for different paths to be taken based on a value range?
What is the purpose of using nested if-else statements for grading?
What is the purpose of using nested if-else statements for grading?
What is a limitation of a single-alternative selection structure?
What is a limitation of a single-alternative selection structure?
Which selection structure is recommended for decision making based on ranges of values?
Which selection structure is recommended for decision making based on ranges of values?
How can boundary cases be tested within selection structures?
How can boundary cases be tested within selection structures?
In the selection structure presented, how is an invalid option indicated?
In the selection structure presented, how is an invalid option indicated?
In the context of selection structures, what is the NOT operator used for?
In the context of selection structures, what is the NOT operator used for?
What is one advantage of using the case structure over multiple if-else statements?
What is one advantage of using the case structure over multiple if-else statements?
Which letter grade corresponds to a numeric grade of 0?
Which letter grade corresponds to a numeric grade of 0?
What numeric grade is required to just pass with a D?
What numeric grade is required to just pass with a D?
Flashcards
Nested Selection Structure
Nested Selection Structure
A programming structure where an if-statement is inside another if-else statement.
AND Operator
AND Operator
In programming, the AND operator checks if both conditions are true.
OR Operator
OR Operator
In programming, the OR operator checks if at least one condition is true.
Conditional Logic (Ranges)
Conditional Logic (Ranges)
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Sequential Evaluation
Sequential Evaluation
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Selection Structure
Selection Structure
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Single-alternative selection
Single-alternative selection
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Dual-alternative selection
Dual-alternative selection
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Nested Selection
Nested Selection
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Boolean Expression
Boolean Expression
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Boundary case
Boundary case
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Nested if-else for Ranges
Nested if-else for Ranges
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Case Structure (Switch)
Case Structure (Switch)
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Default Branch
Default Branch
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Magic Numbers
Magic Numbers
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Constants for Clarity
Constants for Clarity
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When to Use Case or Nested if-else?
When to Use Case or Nested if-else?
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Case Structure vs. Nested if-else: Advantages
Case Structure vs. Nested if-else: Advantages
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Code Readability: Key for Maintenance
Code Readability: Key for Maintenance
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Study Notes
Course Information
- Course title: CST8116 Intro. to Comp. Prog.
- Week: 09
- Lesson: 01
- Topic: Selection Structure (Decisions)
Selection Structure (Decisions)
- Selection Structure is also called Decision Structure
- Permits a program to make decisions based on data and logic
- Results in different program sequences being executed
- Starts with a boolean expression
- Takes one of two paths
- Most languages use 'if', 'if-then-else' or a 'Case' structure (Java 'switch')
Single-Alternative Selection Structure
- A simple program receives numeric input
- Determines if the input is less than 10
- Outputs a message if the condition is true
Dual-Alternative selection structure
- Determines if a number is less than 10 or greater than 10
- Outputs different messages depending on whether the condition is true or false
What about 10?
- A value of exactly 10 may be misclassified (greater than or less than)
- The program needs to be modified to handle this correctly
- Could require a more complex logic (nested if).
Nested Selection Structure
- A structure of if and else statements within an if statement
- Evaluates conditions in order to execute an output statement
- The program checks if the input number is less than, greater than or equal to 10. The output is the appropriate descriptive outcome.
Nested Logic for Ranges of Values
- A simplified way to avoid checking every range
- For example, there are letter grades with ranges
- A program that assigns a grade based on the input range.
Using AND and OR
- AND operator combines conditions
- OR operator checks if either condition is true, even if the other is false
- Used to create more complex logic to address more intricate conditions, and ranges of values..
Testing Boundary Cases
- Focusing on input values at end-points (the boundaries) or "border cases".
- Important for checking program robustness and accuracy, and validity.
Selection Structure: Case
- Specialized structure that compares a value directly with a series of values.
- A useful choice when matching with exact values.
- A simplified example for a program that handles two specific inputs with different branches.
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Description
This quiz covers the basics of Selection Structure, also known as Decision Structure, in programming. You will learn how to implement single-alternative and dual-alternative selection structures. The quiz will explore the use of boolean expressions and how programs can follow different logical paths based on input values.
