Podcast
Questions and Answers
What is the primary role of control structures in programming?
What is the primary role of control structures in programming?
- To declare variables within a program.
- To determine the execution flow of a program. (correct)
- To format the output of a program.
- To define the data types used in a program.
In JavaScript, what is the purpose of the else block when used with an if statement?
In JavaScript, what is the purpose of the else block when used with an if statement?
- To execute code if the `if` condition is false. (correct)
- To terminate the program.
- To execute code only if the `if` condition is true.
- To define a new variable scope.
What happens in a JavaScript switch statement when a break keyword is encountered?
What happens in a JavaScript switch statement when a break keyword is encountered?
- The switch statement starts evaluating from the beginning.
- The switch statement throws an error.
- The switch statement continues to the next case, regardless of whether it matches.
- The switch statement exits, and the program continues with the next statement after the switch block. (correct)
Which statement accurately describes how the for loop operates in JavaScript?
Which statement accurately describes how the for loop operates in JavaScript?
What constitutes an iteration in the context of a loop?
What constitutes an iteration in the context of a loop?
How do while loops and for loops differ from do...while loops in JavaScript?
How do while loops and for loops differ from do...while loops in JavaScript?
What is the primary function of the break keyword within a loop?
What is the primary function of the break keyword within a loop?
When is the default block in a switch statement executed?
When is the default block in a switch statement executed?
In the context of control structures, what does 'conditional execution' refer to?
In the context of control structures, what does 'conditional execution' refer to?
What must a for loop include to ensure it eventually terminates?
What must a for loop include to ensure it eventually terminates?
How does the continue statement affect the flow of a loop?
How does the continue statement affect the flow of a loop?
Which of the following best describes the use case for a switch statement over a series of if...else if statements?
Which of the following best describes the use case for a switch statement over a series of if...else if statements?
What is the purpose of the initializer in a for loop?
What is the purpose of the initializer in a for loop?
How does JavaScript handle a switch statement when the break statement is omitted from a case?
How does JavaScript handle a switch statement when the break statement is omitted from a case?
In a for loop, which expression is evaluated before each iteration?
In a for loop, which expression is evaluated before each iteration?
Control structures determine the execution flow of a program and allow conditional execution and looping.
Control structures determine the execution flow of a program and allow conditional execution and looping.
The if statement can only execute code if the specified condition is false.
The if statement can only execute code if the specified condition is false.
In an if-else construct, the else block provides an alternative execution path when the if condition is true.
In an if-else construct, the else block provides an alternative execution path when the if condition is true.
A switch statement can only evaluate conditions based on numerical values and cannot handle string comparisons.
A switch statement can only evaluate conditions based on numerical values and cannot handle string comparisons.
In a switch statement, the break keyword is optional for all case blocks, including the last one.
In a switch statement, the break keyword is optional for all case blocks, including the last one.
The getDay() method always returns the day of the month.
The getDay() method always returns the day of the month.
The for loop is designed to execute a block of code indefinitely unless manually stopped.
The for loop is designed to execute a block of code indefinitely unless manually stopped.
In a for loop, the initializer is executed after each iteration to reset the loop counter.
In a for loop, the initializer is executed after each iteration to reset the loop counter.
While loops and for loops are considered 'post-test' loops because they evaluate the condition after executing the statements inside the loop.
While loops and for loops are considered 'post-test' loops because they evaluate the condition after executing the statements inside the loop.
A do...while loop always executes the code block at least once, regardless of the initial condition.
A do...while loop always executes the code block at least once, regardless of the initial condition.
Using the break keyword within a loop will only skip the current iteration and continue with the next one.
Using the break keyword within a loop will only skip the current iteration and continue with the next one.
The continue statement is used to skip a specific iteration of a loop and proceed to the next iteration.
The continue statement is used to skip a specific iteration of a loop and proceed to the next iteration.
The if keyword is used for switch statements.
The if keyword is used for switch statements.
In a switch block, case statement must end with the continue keyword to exit when a match is found.
In a switch block, case statement must end with the continue keyword to exit when a match is found.
A do while loop evaluates a test condition before its statements have been executed.
A do while loop evaluates a test condition before its statements have been executed.
Flashcards
Control Structures
Control Structures
Control structures determine the execution flow of a program, allowing conditional execution and looping.
If Statement
If Statement
The 'if' statement evaluates a condition; if true, it executes code. Otherwise, it skips the code block.
If Else Statement
If Else Statement
Extends 'if' by adding an alternative execution path if the condition is false.
Switch Statement
Switch Statement
Signup and view all the flashcards
Loop
Loop
Signup and view all the flashcards
Initializer (in loops)
Initializer (in loops)
Signup and view all the flashcards
Condition (in loops)
Condition (in loops)
Signup and view all the flashcards
Modifier (in loops)
Modifier (in loops)
Signup and view all the flashcards
While Loop
While Loop
Signup and view all the flashcards
Do While Loop
Do While Loop
Signup and view all the flashcards
Break Statement
Break Statement
Signup and view all the flashcards
Continue Statement
Continue Statement
Signup and view all the flashcards
Extending if with else
Extending if with else
Signup and view all the flashcards
How switch works
How switch works
Signup and view all the flashcards
break keyword in switch
break keyword in switch
Signup and view all the flashcards
Loop initializer
Loop initializer
Signup and view all the flashcards
Pre-test loop
Pre-test loop
Signup and view all the flashcards
Study Notes
- Control structures determine a program's execution flow and enable conditional execution and looping.
- Control structures are important because they enable decision-making and repetitive execution, essential for efficient coding and logic building.
Branch If
- The if statement evaluates a condition, then executes code only if the condition is true.
- Syntax for the if statement includes
if (condition) { // block of code to be executed if the condition is true } if (hour < 18) { greeting = "Good day"; }is an example of the if statement.
Branch Alternatives
- Extending if with else adds an alternative execution path to a conditional statement when the initial condition is false.
- Syntax includes
if (condition) { // block of code to be executed if the condition is true } else { // block of code to be executed if the condition is false } - Example includes:
if (hour < 18) { greeting = "Good day"; } else { greeting = "Good evening"; }
Branch Alternatives
- Multiple branches can be provided by making subsequent conditional if tests at the start of each else statement block.
- Syntax includes
if (condition) { // block of code to be executed if the condition is true } else if (condition) { // block of code to be executed if the condition is false } - Example includes:
if (hour < 18) {
greeting = "Good day";
} else if (hour < 24) {
greeting = "Good evening";
}
Studying That Suits You
Use AI to generate personalized quizzes and flashcards to suit your learning preferences.
