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Questions and Answers
What is an expression in C?
What is an expression in C?
A combination of variables, constants, and operators.
In the statement variable = expression;
, the expression is evaluated first and then the previous value of the variable on the left is replaced. The operators like =
, +=
, -=
, *=
, /=
, and %=
are always applied last in an expression.
In the statement variable = expression;
, the expression is evaluated first and then the previous value of the variable on the left is replaced. The operators like =
, +=
, -=
, *=
, /=
, and %=
are always applied last in an expression.
True
Which operator has the highest precedence in C?
Which operator has the highest precedence in C?
What does the operator &&
represent?
What does the operator &&
represent?
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The expression 8 < 3
evaluates to true.
The expression 8 < 3
evaluates to true.
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The sizeof
operator in C is used to determine the size of a variable in bytes.
The sizeof
operator in C is used to determine the size of a variable in bytes.
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Match the following operators with their functions:
Match the following operators with their functions:
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Study Notes
Expressions
- An expression is a combination of variables, constants, and operators.
- Expressions are written according to the syntax of the C language.
- In a statement,
variable = expression;
, the expression is evaluated first, and then the previous value of the variable on the left is replaced. - Operators like
=
,+=
,-=
,*=
,/=
, and%=
are always applied last in an expression.
Operator Precedence
- Operator precedence defines the order in which operators are evaluated in an expression.
- The priority of operators indicates the order of evaluation, with higher priority operators being evaluated first.
- Parentheses
()
, brackets[]
, and member selection (->
) have the highest precedence. - Unary operators like
++
,--
,+
,-
,!
,~
,*
,&
, andsizeof
have higher precedence than binary operators. - Multiplication, division, and modulus (
*
,/
,%
) have higher precedence than addition and subtraction (+
,-
). - Bitwise operators have lower precedence than arithmetic operators.
- Logical operators like
&&
,||
, and?:
have lower precedence than bitwise operators. - Assignment operators like
=
,+=
,-=
,*=
,/=
,%=
,&=
,^=
,|=
,<<=
,>>=
have the lowest precedence.
References
- Tan, H.H., and T.B.D’Orazio.C Programming for Engineering & Computer Science.USA: WCB McGraw-Hill. 1999.Print.
- Tutorialspoint.com."C Operators." Www.tutorialspoint.com.N.p., n.d.Web. 01 Feb. 2017..
- "C Programming Operators." C Operators: Arithmetic, Logical, Conditional and more.N.p., n.d.Web. 01 Feb. 2017..
- Rajinikanth."C Programming Language." C Operators | c operators | operators in c | C by Rajinikanth | C Programming Language.N.p., n.d.Web. 09 Feb. 2017..
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Description
This quiz covers key concepts related to expressions and operator precedence in C programming. You'll learn about the syntax for expressions, the evaluation order of operators, and how to correctly use different operators to manipulate variables. Test your understanding of these foundational topics in C language.