Different type of .Net Operators


An operator is a symbol that tells the compiler to perform specific mathematical or logical manipulations. C# has rich set of built-in operators and provides the following type of operators:

  • Arithmetic Operators
  • Relational Operators
  • Logical Operators
  •  Bitwise Operators
  • Assignment Operators
  • Misc Operators

This tutorial explains the arithmetic, relational, logical, bitwise, assignment, and other operators one by one.

Arithmetic Operators :

Following table shows all the arithmetic operators supported by C#. Assume variable A holds 10 and variable B holds 20 then:

OPERATOR DESCRIPTION EXAMPLE
+’ Adds two operands A + B = 30
-‘ Subtracts second operand from the first A – B =  -10
*’ Multiplies both operands A * B = 200
/’ Divides numerator by de-numerator B/A  = 2
%’ Modulus Operator and remainder of after an integer division  B%A = 0
++’ Increment operator increases integer value by one A + + = 11
–‘ Decrement operator decreases integer value by one A– = 9

Relational Operators:

Following table shows all the relational operators supported by C#. Assume variable A holds 10 and variable B holds 20, then:

OPERATORS DESCRIPTION EXAMPLE
 ‘==’ Checks if the values of two operands are equal or not, if yes then condition becomes true. (A == B) is not true.
 ‘!=’ Checks if the values of two operands are equal or not, if values are not equal then condition becomes true. (A != B) is true.
 ‘>’ Checks if the value of left operand is greater than the value of right operand, if yes then condition becomes true. (A > B) is not true.
 ‘<‘ Checks if the value of left operand is less than the value of right operand, if yes then condition becomes true. (A < B) is true.
 ‘>=’ Checks if the value of left operand is greater than or equal to the value of right operand, if yes then condition becomes true. (A >= B) is not true.
 ‘<=’ Checks if the value of left operand is less than or equal to the value of right operand, if yes then condition becomes true. (A <= B) is true.

Logical Operators :

Following table shows all the logical operators supported by C#. Assume variable A holds Boolean value true and variable B holds Boolean value false, then:

OPERATORS DESCRIPTION EXAMPLE
 ‘&&’ Called Logical AND operator. If both the operands are non zero then condition becomes true. (A && B) is false.
 ‘||’ Called Logical OR Operator. If any of the two operands is non zero then condition becomes true. (A || B) is true.
 ‘!’ Called Logical NOT Operator. Use to reverses the logical state of its operand. If a condition is true then Logical NOT operator will make false. !(A && B) is true.

Bitwise Operators:

Bitwise operator works on bits and perform bit by bit operation. The truth tables for &, |, and ^ are as follows:

‘p’  ‘q’  ‘p&q’ ‘p|q’ ‘p^q’
0 0 0 0 0
0 1 0 1 1
1 1 1 1 0
1 0 0 1 1

Assume if A = 60; and B = 13, then in the binary format they are as follows:

A = 0011 1100

B = 0000 1101

—————–

A&B = 0000 1100

A|B = 0011 1101

A^B = 0011 0001

~A = 1100 0011

The Bitwise operators supported by C# are listed in the following table. Assume variable A holds 60 and variable B holds 13, then:

OPERATOR DESCRIPTION EXAMPLE
 ‘&’ Binary AND Operator copies a bit to the result if it exists in both operands. (A & B) = 12, which is 0000 1100
 ‘|’ Binary OR Operator copies a bit if it exists in either operand. (A | B) = 61, which is 0011 1101
 ‘^’ Binary XOR Operator copies the bit if it is set in one operand but not both. (A ^ B) = 49, which is 0011 0001
 ‘~’ Binary Ones Complement Operator is unary and has the effect of ‘flipping’ bits. (~A ) = 61, which is 1100 0011 in 2’s complement due to a signed binary number.
 ‘<<‘ Binary Left Shift Operator. The left operands value is moved left by the number of bits specified by the right operand. A << 2 = 240, which is 1111 0000
  ‘>>’ Binary Right Shift Operator. The left operands value is moved right by the number of bits specified by the right operand. A >> 2 = 15, which is 0000 1111

  

  

Assignment Operators:

There are following assignment operators supported by C#:

OPERATOR DESCRIPTION EXAMPLE
  ‘=’ Simple assignment operator, Assigns values from right side operands to left side operand C = A + B assigns value of A + B into C
  ‘+=’ Add AND assignment operator, It adds right operand to the left operand and assign the result to left operand C += A is equivalent to C = C + A
  ‘-=’ Subtract AND assignment operator, It subtracts right operand from the left operand and assign the result to left operand C -= A is equivalent to C = C – A
  ‘*=’ Multiply AND assignment operator, It multiplies right operand with the left operand and assign the result to left operand C *= A is equivalent to C = C * A
  ‘/=’ Divide AND assignment operator, It divides left operand with the right operand and assign the result to left operand C /= A is equivalent to C = C / A
  ‘%=’ Modulus AND assignment operator, It takes modulus using two operands and assign the result to left operand C %= A is equivalent to C = C % A
  ‘<<=’ Left shift AND assignment operator C <<= 2 is same as C = C << 2
  ‘>>=’ Right shift AND assignment operator C >>= 2 is same as C = C >> 2
  ‘&=’ Bitwise AND assignment operator C &= 2 is same as C = C & 2
  ‘^=’ bitwise exclusive OR and assignment operator C ^= 2 is same as C = C ^ 2
  ‘|=’ bitwise inclusive OR and assignment operator C |= 2 is same as C = C | 2

Miscillaneous Operators :

There are few other important operators including sizeof, typeof and ? : supported by C#.

Example:  sizeof(), typeof()

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