| Assignment operators are used to assign the result of an expression to a variable. The most commonly used assignment operator is (=). |
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| eg: i=i+10; |
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| i=i+10 is an assignment expression which assigns the value of i+10 to i. |
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| Expression like i=i+10, i=i-5, i=i*2 etc. can be rewritten using shorthand assignment operators. |
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| e.g.: i=i+5 is equivalent to i+=5 |
| i=i*(y+1) is equivalent to i*=(y+1) |
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| Operator Precedence: |
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| While executing an arithmetic statement which has two or more operators, we may have some problems about how exactly does it get executed. |
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| To answer these questions satisfactorily we have to understand the precedence of operators. |
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| Precedence defines the sequence in which operators are to be applied on the operands. Operators of same precedence are evaluated from left to right or right to left, depending upon the level. |
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| This is known as associativity property of an operator. |
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| Summary of precedence of associativity is given below: |
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| Description |
Operator |
Associativity |
| Function Expression |
( ) |
Left to Right |
| Array Expression |
[ ] |
Left to Right |
| Structure Operator |
-> |
Left to Right |
| Structure Operator |
. |
Left to Right |
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|
| Description |
Operator |
Associativity |
| Unary minus |
– |
Right to Left |
| Increment/Decrement |
++/– |
Right to Left |
| One’s Compliment |
~ |
Right to Left |
| Negation |
! |
Right to Left |
| Address of |
& |
Right to Left |
| Value at address |
* |
Right to Left |
| Type cast |
(type) |
Right to Left |
| Size in bytes |
sizeof |
Right to Left |
|
|
| Description |
Operator |
Associativity |
| Multiplication |
* |
Left to Right |
| Division |
/ |
Left to Right |
| Modulus |
% |
Left to Right |
| Addition |
+ |
Left to Right |
| Subtraction |
– |
Left to Right |
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|
| Description |
Operator |
Associativity |
| Left Shift |
<< |
Left to Right |
| Right Shift |
>> |
Left to Right |
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|
| Description |
Operator |
Associativity |
| Less Than |
< |
Left to Right |
| Less Than Equal to |
<= |
Left to Right |
| Greater than |
> |
Left to Right |
| Greater than Equal to |
>= |
Left to Right |
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|
| Description |
Operator |
Associavity |
| Equal to |
== |
Left to Right |
| Not equal to |
!= |
Left to Right |
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|
| Description |
Operator |
Associavity |
| Bitwise AND |
& |
Left to Right |
| Bitwise XOR |
^ |
Left to Right |
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|
| Description |
Operator |
Associavity |
| Bitwise OR |
^ |
Left to Right |
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|
| Description |
Operator |
Associavity |
| Logical AND |
&& |
Left to Right |
| Logical OR |
|| |
Left to Right |
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|
| Description |
Operator |
Associavity |
| Conditional |
?: |
Right to Left |
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|
| Description |
Operator |
Associavity |
| Assignment |
= |
Right to Left |
| Assignment |
*= /= %= |
Right to Left |
| Assignment |
+= -= &= |
Right to Left |
| Assignment |
^= |= |
Right to Left |
| Assignment |
<<= >>= |
Right to Left |
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|
| Description |
Operator |
Associavity |
| Comma |
, |
Right to Left |
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