CS 200 Error Handling and Expressions Quiz
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Questions and Answers

Which type of error occurs due to incorrect program logic but does not crash the program?

  • Semantic error
  • Logical error (correct)
  • Syntax error
  • Runtime error

    • Lazy evaluation is commonly found in which language type?

  • Functional (correct)
  • Scripting
  • Procedural
  • Object-oriented

    • What type of assignment allows a value to be assigned to multiple variables at once?

  • Simple Assignment
  • Chained Assignment (correct)
  • Parallel Assignment
  • Compound Assignment

    • The ternary operator in JavaScript has the form:

    <p>condition ? expr1 : expr2</p> Signup and view all the answers

    Which type of error is detected before the program is executed?

    <p>Syntax error</p> Signup and view all the answers

    Which language has a safe navigation operator?

    <p>Kotlin</p> Signup and view all the answers

    Which scenario benefits from short-circuiting?

    <p>Checking if a variable is true before performing a calculation</p> Signup and view all the answers

    Copy semantics in assignment means:

    <p>The value on the right is copied into the variable on the left.</p> Signup and view all the answers

    What type of language checks types at runtime?

    <p>Dynamically-typed</p> Signup and view all the answers

    What is the primary benefit of lazy evaluation?

    <p>Avoids computation until needed</p> Signup and view all the answers

    Which language does not support operator overloading?

    <p>Java</p> Signup and view all the answers

    What does parallel assignment allow you to do?

    <p>Assigning different values to multiple variables in one line</p> Signup and view all the answers

    In C, which syntax is correct for casting a variable to an integer?

    <p>(int) x</p> Signup and view all the answers

    What can type demotion lead to?

    <p>Loss of precision</p> Signup and view all the answers

    Which statement about operator overloading is true?

    <p>None of the above</p> Signup and view all the answers

    What is the key feature of short-circuit evaluation?

    <p>It stops further evaluation once the result is determined</p> Signup and view all the answers

    Which programming language feature is primarily responsible for improving reliability by preventing programs from crashing due to unexpected circumstances?

    <p>Exception handling</p> Signup and view all the answers

    Who is credited with the invention of the binary system and calculus?

    <p>Gottfried Wilhelm Leibniz</p> Signup and view all the answers

    What is a key drawback of highly expressive programming languages?

    <p>Reduced readability</p> Signup and view all the answers

    Which is NOT a characteristic of machine language?

    <p>High-level abstraction</p> Signup and view all the answers

    Prolog was originally designed for which application?

    <p>Artificial intelligence</p> Signup and view all the answers

    In the expression $x = 7 + 3 * 6$, which operation is performed first?

    <p>Multiplication</p> Signup and view all the answers

    Who is credited with designing the first widely known compiler?

    <p>Grace Hopper</p> Signup and view all the answers

    What kind of programming uses logical deduction rather than sequential steps?

    <p>Logic Programming</p> Signup and view all the answers

    What is the primary purpose of a try-catch block?

    <p>To handle runtime errors.</p> Signup and view all the answers

    Which of the following is NOT considered a feature of a programming language?

    <p>Debugging mode</p> Signup and view all the answers

    Which paradigm organizes computation around variables and stepwise control of data manipulation?

    <p>Imperative</p> Signup and view all the answers

    Which example shows short-circuiting effectively protecting against division by zero?

    <p>if (a != 0 &amp;&amp; b / a &gt; 2) {...}</p> Signup and view all the answers

    What is the purpose of a variable in programming?

    <p>It stores data temporarily in memory</p> Signup and view all the answers

    Which rule dictates the order of operations in mathematical expressions?

    <p>Precedence</p> Signup and view all the answers

    What describes the key difference between initialization and assignment?

    <p>Initialization provides an initial value, while assignment updates the variable's value.</p> Signup and view all the answers

    Which of the following languages introduced the concept of object-oriented programming?

    <p>Simula</p> Signup and view all the answers

    What is the primary use of expression trees in programming?

    <p>Parse expressions.</p> Signup and view all the answers

    What type of error occurs if you try to divide an integer by zero in most programming languages?

    <p>Runtime error</p> Signup and view all the answers

    What mechanism can a programmer use to handle overflow during type conversion?

    <p>Error handling mechanisms, like try-catch blocks.</p> Signup and view all the answers

    What is a recommended best practice to prevent bugs related to type conversions?

    <p>Use explicit conversions whenever possible.</p> Signup and view all the answers

    Which of the following actions best ensures conditions remain clear in code?

    <p>Keeping conditions clear and avoiding excessive nesting.</p> Signup and view all the answers

    What distinguishes initialization from assignment in programming?

    <p>Initialization provides an initial value, while assignment updates the variable's value.</p> Signup and view all the answers

    Which of the following best describes expression trees?

    <p>They are used to visualize the order of evaluation.</p> Signup and view all the answers

    Which statement about type coercion is correct?

    <p>Type coercion occurs when different data types are combined in an operation.</p> Signup and view all the answers

    In programming, what is the primary function of an assignment statement?

    <p>To evaluate an expression and store the result in a variable.</p> Signup and view all the answers

    What is a recommended practice to prevent bugs related to type conversion?

    <p>Use explicit conversions whenever possible.</p> Signup and view all the answers

    How does strict evaluation operate in programming?

    <p>All parts of the expression are evaluated before execution continues.</p> Signup and view all the answers

    Which option exemplifies user-friendly error handling in web applications?

    <p>Providing helpful, easy-to-understand messages when something goes wrong.</p> Signup and view all the answers

    What is an expression in the context of programming?

    <p>A combination of values, variables, operators, and functions that produce a result.</p> Signup and view all the answers

    Study Notes

    Multiple Choice Questions (CS 200)

    • Error Handling: User-friendly error handling in web applications involves providing helpful messages instead of cryptic codes.
    • Expressions: A programming expression combines values, variables, operators, and functions to produce a result.
    • Type Coercion: Type coercion is most likely to occur when combining numbers and strings (e.g., 3 + "4").
    • Assignment Statements: Assignment statements store the result of an expression in a variable.
    • Strict Evaluation: Strict evaluation evaluates all parts of an expression before executing.
    • Retry Logic: This pattern handles temporary network failures or other temporary issues by repeatedly attempting an operation until successful.
    • Syntax vs. Semantics: Syntax defines the structure of a program, while semantics defines its meaning.
    • Unpacking Assignment: Unpacking Assignment in Python enables you to unpack values from a sequence into individual variables.
    • Error Types: Logical errors occur due to incorrect program logic, but the program won't halt.
    • Lazy Evaluation: Lazy evaluation only performs computations when needed, optimizing resource use.
    • Copy Semantics: Copy semantics means a new copy of a value is made, not just a reference to the original location.
    • Uninitialized Variables: Uninitialized variables might contain garbage data, leading to unexpected behavior.
    • Type Conversions (Explicit and Implicit): Explicit conversions are done deliberately using commands like int(), avoiding ambiguity. Implicit conversions are automated by the compiler.
    • Error Handling through Try-Catch blocks: Error handling mechanisms like try-catch blocks allow for graceful handling of exceptional situations.

    Additional Concepts

    • Short-Circuiting: Short-circuiting avoids evaluating unnecessary parts of a logical expression (e.g., a != 0 && b / a > 2).
    • Ternary Operator: The ternary operator in JavaScript is a compact way to write conditional expressions (e.g., condition ? expr1 : expr2).

    Quiz Questions (CS 200)

    • Compiler Design: John Backus is considered as designing the first widely known compiler.
    • Programming Paradigms: Logic programming uses logical deduction instead of sequential steps.
    • Variable Purpose: Variables in programming temporarily store data.
    • Object-oriented Programming Languages: Simula is a key language that introduced object-oriented programming.
    • Functional Programming: Functional programming draws on mathematical ideas like lambda calculus.
    • Error Types: Runtime errors happen during program execution unlike syntax errors which occur during compilation.
    • Operator Overloading: In C++, operators can be overloaded to perform different functions on different data types.
    • Type Checking: Dynamically typed languages perform type checking at runtime versus static typing.
    • Program Performance: Program performance is influenced by factors, such as expressiveness, reusability, and handling of code errors.
    • Compilers vs Interpreters: An interpreter translates and runs code line by line in contrast to a compiler that converts the entire code at once.
    • Code Reusability: Reusability promotes building upon existing components and is crucial for faster development and better code quality.
    • Programming Languages The evolution of programming languages is a gradual progression from basic machine-level code to more-robust, easier and efficient approaches.
    • Programming History: There are different developers, pioneers and contributors to the development of programming languages.

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    Quiz #2 - Midterm CS 200 - Programming Languages - Technological Institute of the Philippines

    Description

    Test your understanding of essential programming concepts in CS 200, including error handling, expressions, type coercion, and assignment statements. This quiz will assess your knowledge and grasp of these foundational topics crucial for developing robust web applications.

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