Arithmetic Instructions in C Programming

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Questions and Answers

What are the arithmetic operators used in C programming?

  • &, |, ^, ~
  • <, >, ==, !=
  • %, ++, --, =
  • +, -, *, / (correct)

In an integer mode arithmetic statement in C programming, what type of operands are involved?

  • Integer variables or real constants
  • Integer variables or integer constants (correct)
  • Real variables or integer constants
  • Real variables or real constants

What is the assignment operator in C programming?

  • ==
  • = (correct)
  • -=
  • +=

If 'i' is an integer variable in C programming, what would be the result of the arithmetic statement 'i = i + 1;'?

<p>'i' will be incremented by 1 (A)</p> Signup and view all the answers

What are the real mode arithmetic statements in C programming characterized by?

<p>Involving only real constants and real variables (D)</p> Signup and view all the answers

If 'kot' is a float variable assigned the value 0.0056 in C programming, what type of constant is 0.0056?

<p>Real constant (A)</p> Signup and view all the answers

What is the result of k = 2 / 9 if k is an integer variable?

<p>0 (C)</p> Signup and view all the answers

When executing 2 * x - 3 * y, how is it calculated based on the hierarchy of operations?

<p>(2x) - (3y) (D)</p> Signup and view all the answers

What happens when evaluating A / B * C based on the hierarchy of operations?

<p>(A / B) * C (D)</p> Signup and view all the answers

If a = 9 / 2.0, what will be the value stored in 'a'?

<p>4.5 (B)</p> Signup and view all the answers

When performing k = 9.0 / 2, what will be stored in 'k'?

<p>4.5 (C)</p> Signup and view all the answers

In k = 2 / 9.0, why does k get assigned the value of 0?

<p><code>k</code> gets demoted to an integer. (C)</p> Signup and view all the answers

Which of the following arithmetic statements is NOT legal in C?

<p>k * l = z ; (B)</p> Signup and view all the answers

What does the modulus operator (%) return in C when used on integers?

<p>The remainder of the division (D)</p> Signup and view all the answers

Which data type in C cannot have the modulus operator (%) applied to it?

<p>float (C)</p> Signup and view all the answers

If a variable 'si' is defined as 'float si;', what type of arithmetic statement does it belong to?

<p>Mixed mode arithmetic statement (D)</p> Signup and view all the answers

In C, what is the result of -5 % 2?

<p>-1 (A)</p> Signup and view all the answers

'z = k * l ;' is an example of which kind of illegal arithmetic statement in C?

<p>Left-hand side operand assignment (C)</p> Signup and view all the answers

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Study Notes

Arithmetic Instruction

  • A C arithmetic instruction consists of a variable name on the left-hand side of = and variable names & constants on the right-hand side of =.
  • The variables and constants on the right-hand side are connected by arithmetic operators like +, -, *, and /.
  • = is the assignment operator.

Types of Arithmetic Statements

  • There are three types of arithmetic statements:
    • Integer mode arithmetic statement: All operands are either integer variables or integer constants.
    • Real mode arithmetic statement: All operands are either real constants or real variables.
    • Mixed mode arithmetic statement: Some operands are integers and some are real.

Hierarchy of Operations

  • The hierarchy of operations determines the order in which operations are performed in an arithmetic statement.
  • The priority or precedence of operations is as follows:
    • (figure 1.8 not included, but it shows the hierarchy of operations)

Execution of Arithmetic Statements

  • The right-hand side of an arithmetic statement is evaluated using constants and numerical values stored in variable names.
  • The result is then assigned to the variable on the left-hand side.

Important Points to Note

  • C allows only one variable on the left-hand side of =.
  • The division operator / returns the quotient, whereas the modular division operator % returns the remainder.
  • The modulus operator % cannot be applied to a float.
  • The sign of the remainder is always the same as the sign of the numerator when using the modulus operator %.

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