C Programming Chapter 3: Operators and Expressions Quiz
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Questions and Answers

What values represent true and false in C logical expressions?

  • 2 and 0, respectively
  • 0 and 2, respectively
  • 1 and 2, respectively
  • 0 and 1, respectively (correct)
  • Regarding the associativity of logical operators in C, what is the associativity?

  • Right to left
  • Left to right (correct)
  • Random associativity
  • No associativity
  • Which group of operators in C has precedence lower than arithmetic and unary operators?

  • Logical operators
  • Relational operators (correct)
  • Equality operators
  • Unary operators
  • What is the purpose of equality operators in C logical expressions?

    <p>To compare two values for equality or inequality</p> Signup and view all the answers

    If j = 2 and k = 3, what will be the result of the expression 'j < k'?

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

    For the logical expression 'i != j', what does '!=' represent in C?

    <p>Not equal to</p> Signup and view all the answers

    Which logical operator in C is represented by '&&'?

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

    When do logical 'or' operations return false in C?

    <p>When both operands are false</p> Signup and view all the answers

    What is the outcome of a logical 'and' operation in C when one operand is false?

    <p>Always false</p> Signup and view all the answers

    What happens in C if the operands of a logical 'or' operation are both true?

    <p>It returns true</p> Signup and view all the answers

    Which symbol is used for the logical 'or' operation in C?

    <p><strong>||</strong></p> Signup and view all the answers

    If both operands of a logical 'and' operation in C are true, what is the result?

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

    What is assigned to 'flag' if the value of 'i' is positive?

    <p>100</p> Signup and view all the answers

    In the assignment statement 'min = (f < g) ? f : g', what does 'min' store when 'f' and 'g' are equal?

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

    Which operator category has precedence just above the assignment operators?

    <p>Logical and logical or</p> Signup and view all the answers

    'Logical and logical or' operators fall under which category of operators based on precedence?

    <p>Relational operators</p> Signup and view all the answers

    Study Notes

    Expressions in C

    • Expressions can consist of entities, operators, and combinations of both.
    • They can also represent logical conditions that are either true or false.
    • In C, true and false are represented by integer values 1 and 0, respectively.

    Relational Operators

    • Relational operators compare values and return true (1) or false (0).
    • Examples of relational operators include &gt;, &gt;=, &lt;, &lt;=, ==, !=.
    • These operators have a lower precedence than arithmetic and unary operators.
    • They have a left-to-right associativity.

    Equality Operators

    • Equality operators check if values are equal or not equal.
    • Examples of equality operators include == and !=.
    • These operators have a separate precedence group, beneath the relational operators.
    • They have a left-to-right associativity.

    Logical Operators

    • Logical operators combine logical expressions into more complex conditions.
    • Examples of logical operators include &amp;&amp; (logical and) and || (logical or).
    • The result of a logical and operation is true only if both operands are true.
    • The result of a logical or operation is true if either operand is true or both operands are true.

    Conditional Expressions

    • Conditional expressions can appear on the right-hand side of a simple assignment statement.
    • The resulting value of the conditional expression is assigned to the identifier on the left.
    • Examples of conditional expressions include (i &lt; 0) ? 0 : 100 and (f &lt; g) ? f : g.

    Operator Precedence

    • Operator precedence determines the order in which operators are evaluated.
    • Table 3-1 summarizes the precedences for all operators discussed in this chapter.
    • The conditional operator has its own precedence, just above the assignment operators.
    • The associativity of the conditional operator is right to left.

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    Description

    Test your knowledge of C programming operators and expressions with this quiz. Explore various relational and equality operations, including type conversion rules. See examples to better understand how different operands are converted to perform operations.

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