Friday, 15 December 2017

Operators In C

operators in c


operators in c refers to the symbols which are used to perform mathematical operations in c programming. Operators  are nothing but the specific symbols which is used to perform mathematical operations in the program.

Programming c is very rich in operators. We can perform all type of mathematical operations in c. for that it provides wide range of c operators.


C programming provides following type of different operators-


  1. Arithmetic Operators
  2. Relational Operators
  3. Assignment Operators
  4. Logical Operators
  5. Increment and Decrement Operators               
  6. Bitwise Operators
  7. Special Operators


C Arithmetic Operators

In c arithmetic operators are used to perform basic type of mathematical operations such as addition,subtraction,multiplication ,division etc. these operators are mostly use in the programs.
Following table shows the arithmetic operators and their use with example.


Operator
Use
Example
+
Addition
2+2=4
-
Subtraction
2-2=0
*
Multiplication
2*2=4
/
Division
2/2=1
%
Reminder
2%2=0


C Relational Operators


Relational operators are used to  check the relation between two operands. relations such as  less than,greater than, equals to,etc. these operators are mostly used in decision making statements.

operator
Use
Example
< 
Returns true if value is smaller than comparing value
4<2     returns false
2<8     returns true
> 
Returns true if value is bigger than comparing value
8>2     returns true
5>10   returns false
<=
Returns true if value is less or equal  to the given value
2<=5   returns true
6<=3   returns false
5<=5   returns true
>=
Returns true if value is greater or equal to the given value
8>=8   returns true
5>=6   returns false
10>=6  returns true
==
Returns true if two values are same
10==10 returns true
6==5     returns false
!=
Returns true if given value is not equal to comparing value
10!=10  returns false
10!=50 returns true

Assignment Operator

Assignment operators are used to assign values to the variables. Following table shows the various assignment operators in c.


Operators
   Example
equals
=
a = b
a = b
+=
a += b
a = a+b
-=
a -= b
a = a-b
*=
a *= b
a = a*b
/=
a /= b
a = a/b
%=
a %= b
a = a%b
<<=
C <<= 2
is same as C = C << 2
>>=
C >>= 2
is same as C = C >> 2
&=
C &= 2
is same as C = C & 2
^=
. C ^= 2
is same as C = C ^ 2
|=
C |= 2
is same as C = C | 2


Increment and decrement operators



Increment and decrement operators are used to increase and decrease value of variables by 1 respectivly. following table shows details about increment and decrement operators.


operator
Use
Example
++
Increase value of variable by one
a++
--
Decrease value of variables by one
a--

Logical operators

Logical operators are used to check the conditions. It returns  0 or 1 depending upon condition become true or false. Suppose a=0 and b=1


Operator
Description
Example
&&
It returns true if given all conditions are become true
(a && b) is false.
||
It returns true if any one condition becomes true
(a || b) is true.
!
It converts true to false and false to true
!(a && b) is true


Bitwise operator



Bitwise operators works on bit level. They perform calculations on bit level. Following table shows the detail information about bit level operators.


Operators
Meaning
&
Bitwise AND
|
Bitwise OR
^
Bitwise exclusive OR
~
Bitwise complement
<< 
Shift left
>> 
Shift right


specail operators

Following are some important operators which are very important in c. they are used for different purposes these operators shown in following table.

Operators
meaning
Example
sizeof()
Returns the size of a variable.
sizeof(i), where i is integer, will return 4.
&
Returns the memory address of a variable.
&b; returns the actual address of the variable.
*
Pointer to a variable.
*b;
? :
Conditional Expression.
If Condition is true then it returns first value otherwise second value  will be return




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