C#.NET Operators

Posted by : Sudhir Chekuri Wednesday, 30 December 2015

C# Operators are the symbols used in C# programming to performing different types of operations.

They are classified into arithmetic, assignment, unary, relational, logical, bitwise and shift operators.

Lets go in detail about the operators.

C# Arithmetic Operators

C# Arithmetic operators are used to perform mathematical operations like addition, subtraction, multiplication and division.

C# Arithmetic operators can be used to perform arithmetic operations between numeric variables values like int, long, float, double, decimal.

C# Arithmetic operators are as follows

+ (addition)

eg: a+b

- (subtraction)

eg: a-b

* (multiplication)

eg: a* b

/ (division)

eg: a/b

% (modulus)

eg: a%b

+ is used as an arithmetic operator if it is used to in between variables of numeric type.

+ is used as concatenation operator to combine two values if it is in between two text datatypes (or) text datatype and numeric datatype.

C# Assignment operators

C# Assignment operators are used to reduce the code.

If you have to write a = a+ b; you can use += assignment operator to reduce that code to a+=b;

Like this we can use below C# Assignment operators to reduce the code as shown in the examples.

+=

Example: a+=b; ie., a=a+b;

-=

Example: a-=b; ie., a=a-b;

*=

Example: a*=b; ie., a=a*b;

/=

Example: a/=b; ie., a=a/b;

%=

Example: a%=b; ie., a=a%b;

C# Increment decrement operators

C# Increment operator is used to increment numeric value by 1 and C# decrement operator is used to decrease numeric value by 1.

Increment and decrement operators looks like this

++ (C# Increment operator)

-- (C# decrement operator)

In increment we have pre increment and post increment.

In decrement we have pre decrement and post decrement.

Preincrement means increasing the value by 1 before the statement gets executed.

Example: ++i

If i is a variable of numeric type containing a value, it will get incremented by 1 before the statement gets executed.

Postincrement means increasing the value by 1 after the statement is executed.

Example: i++

If i is a variable of numeric type containing a value, it will get incremented by 1 after the statement gets executed.

i-- (post decrement)

i is decreased by 1 after the code is executed.

--i (pre decrement) i is decreased by 1 before the code gets executed.

C# Relational operators

C# Relational operators are used to compare two values in variables. Used in if , for and while to check the conditions.

C# Relational operators are as follows

> greater than

< less than

>= greater than or equal to

<= less than or equal to

== equals to

!= not equal to

C# Logical operators

C# Logical operators are logical and, logical or and logical not

&& (logical and) when both are true.

|| (logical or) when one of them is true.

~ (logical not) when both are false.

C# Bit wise operators

& (bitwise and)

| (bitwise or)

^ (bitwise xor)

! (bitwise not)

C# Shift operators

C# Shift operators are used to simply some mathematical operations like multiplication and division operators.

C# Shift left operator works for multiplication. If we write 3<<4 that is equal to 3*2^4.

<< (shift left) (*)

eg: a=3<<4 ie., 3*2^4 =48

C# Shift right operator works for division. If we write 3>>4 that is equal to 3/2^4.

>> (shift right) (/) eg: a=3>>4 ie., 3/2^4 =146