Control Statements and Loops
10 Questions
0 Views

Choose a study mode

Play Quiz
Study Flashcards
Spaced Repetition
Chat to Lesson

Podcast

Play an AI-generated podcast conversation about this lesson

Questions and Answers

What is a characteristic of a 'while(0)' loop?

  • It runs the code block at least once.
  • It never executes the code block. (correct)
  • It executes the code block indefinitely.
  • It causes an infinite loop.

In a switch statement, what happens after a case label is matched?

  • Only the matched case executes.
  • All subsequent case labels are executed until a break statement is reached. (correct)
  • The switch statement is ignored if case condition is false.
  • The program exits the switch statement immediately.

Which of the following is an invalid case label in a switch statement?

  • case a: (correct)
  • case 2*6:
  • case 'c':
  • case 3:

How does an else statement function in relation to an if statement?

<p>It executes only when the condition of the if statement is false. (A)</p> Signup and view all the answers

What is true about the 'do-while' loop?

<p>It executes the code block at least once, regardless of the condition. (D)</p> Signup and view all the answers

What is the outcome of the following loop? for(i=0;i<5;i++); followed by code1; code2;

<p>code1 executes 5 times, code2 executes once (A)</p> Signup and view all the answers

Which statement about the 'break' control statement is true?

<p>It exits only from the nearest loop or switch statement. (D)</p> Signup and view all the answers

What happens when you use duplicate case labels in a switch statement?

<p>The compiler will issue a compilation error. (A)</p> Signup and view all the answers

In the case statement case a ... b:, what is the purpose of the range?

<p>It allows checking against multiple discrete values. (A)</p> Signup and view all the answers

Which of the following is a valid switch statement?

<p>switch(a&amp;b) (A), switch(1) (D)</p> Signup and view all the answers

Flashcards

Infinite Loop (for)

A loop that continues running forever because the loop condition remains true.

Empty for loop body

A 'for' loop that has no statements inside its curly braces.

switch case range

'case a ... b' in a switch statement checks values within a specified range.

'break' statement in loop

Used to exit a loop (e.g., 'for', 'while', 'do-while') prematurely.

Signup and view all the flashcards

'continue' statement in loop

Skips the current loop iteration and proceeds to the next.

Signup and view all the flashcards

Conditional Control Statement

Used in programming to execute a block of code only if a specific condition is true.

Signup and view all the flashcards

while loop

A loop that repeatedly executes a block of code as long as a condition remains true.

Signup and view all the flashcards

do-while loop

A loop that executes a block of code at least once and then repeatedly executes it while a condition remains true.

Signup and view all the flashcards

for loop

A loop that repeatedly executes a block of code for a specific number of times or until a condition changes.

Signup and view all the flashcards

Infinite loop

A loop that continues to execute indefinitely because the condition for termination is never met.

Signup and view all the flashcards

Study Notes

Control Statements

  • Conditional Control statements: Used to control the flow of execution based on conditions
  • if(condition): Executes a block of code if the condition is true
  • if-else: Executes one block if the condition is true and another block if it's false
  • if-else-if ladder:Allows multiple conditions to be checked sequentially.
  • switch(): Allows multiple options based on the value of an expression.
  • switch(variable/expression)

Loops

  • Loops execute a block of code repeatedly until a condition is met
  • while: The condition is checked at the beginning of each iteration.
  • while(condition): Executes a block of code while the condition is true
  • do-while: The condition is checked at the end of each iteration.
  • do{code;} while(condition); - Ensures the code runs at least once.
  • for: Used for a specific number of iterations.
  • for(initialization;condition;update): Executes a block of code a set number of times -Initialization: executed once before the loop begins -Condition: tested before each iteration -Update/Increment: executed after each iteration.

Jump Statements

  • break: Used to exit a loop or switch statement prematurely.
  • continue: Skips the current iteration of a loop and proceeds to the next.
  • goto: Transfers control to a labeled statement within the code.

Conditional Statements Considerations

  • Unreachable Code: Code that will never be executed because a prior condition always evaluates to true/false.
  • Case Values: Case labels within a switch statement must be unique and constant expressions (e.g., integers, characters).
  • Duplicate Case Labels: Not allowed in a switch statement
  • Valid Expression Choices in Switch: The expression in a switch statement must be a value (int, char, or enumerated type)

General Notes

  • Indentation: Crucial for code readability and correct execution; especially in loops and conditional statements.
  • Comments: Documenting code enhances understanding and maintainability.
  • Data Types: Variables must have appropriate data types that match the operation you are performing (int, float, etc.)

Studying That Suits You

Use AI to generate personalized quizzes and flashcards to suit your learning preferences.

Quiz Team

Related Documents

Control Statements PDF

Description

This quiz covers the fundamental concepts of control statements and loops in programming. Test your understanding of conditional statements like if-else and switch, as well as various types of loops, including while, do-while, and for. Master these concepts to enhance your programming skills.

More Like This

do...while Statement in Programming
4 questions
Python Loop and Control Statements Quiz
42 questions
Use Quizgecko on...
Browser
Browser