An Operator Precedence is the hierarchy in which operators are evaluated.
For example in the expression 2 + 2 * 3, the result would be 8 since the "*" operator has higher precedence over
the "+" operator.
Now the same expression is used with a paranthesis like (2 + 2) * 3, the result would be 12. The "()" is used to force
precedence by making the expression inside the braces executed first. If the precedence are equal then the associativity is
used to evaluate an expression.
This is the Operator Precedence in C++.
Name
Operator
Direction
Precedence
Parentheses
()
Left to Right
1
Post-increment
++
Left to Right
2
Post-decrement
--
Left to Right
2
Address
&
Right to Left
2
Bitwise NOT
~
Right to Left
2
Typecast
(type)
Right to Left
2
Logical NOT
!
Right to Left
2
Negation
-
Right to Left
2
Plus Sign
+
Right to Left
2
Pre-increment
++
Right to Left
2
Pre-decrement
--
Right to Left
2
Size of data
sizeof
Right to Left
2
Modulus
%
Left to Right
3
Multiplication
*
Left to Right
3
Division
/
Left to Right
3
Addition
+
Left to Right
4
Subtraction
-
Left to Right
4
Bitwise Shift Left
<<
Left to Right
5
Bitwise Shift Right
>>
Left to Right
5
Less Than
<
Left to Right
6
Less Than or Equal
<=
Left to Right
6
Greater Than
>
Left to Right
6
Greater Than or Equal
>=
Left to Right
6
Equal
==
Left to Right
7
Not Equal
!=
Left to Right
7
Bitwise AND
&
Left to Right
8
Bitwise XOR
^
Left to Right
9
Bitwise OR
|
Left to Right
10
Logical AND
&&
Left to Right
11
Logical OR
||
Left to Right
12
Condition Expression
?:
Right to Left
13
Assignment
=
Right to Left
14
Additive Assignment
+=
Right to Left
14
Subtractive Assignment
-=
Right to Left
14
Multiplicative Assignment
*=
Right to Left
14
Divisional Assignment
/=
Right to Left
14
Modulating Assignment
%=
Right to Left
14
Left Shift Assignment
>>=
Right to Left
14
Right Shift Assignment
<<=
Right to Left
14
AND Assignment
&=
Right to Left
14
XOR Assignment
|=
Right to Left
14
OR Assignment
^=
Right to Left
14
Comma
,
Left to Right
15
Note
C++ is one of the most used programming languages in the world. Also known as "C with Classes".
Hope you enjoy this tutorial. Do send your feedback or suggestions on this C++ tutorial. This is a copyright content.
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