C++ Operators

By | September 29, 2021
C++ Operators

In this C++ tutorial, we will discuss what are operators and how many types of operators are present in C++.

What are the Operators?

Operators are the special symbols we use in any programming language which are used to perform some kind of operation between two operands. An operator always requires some appropriate operands to operate. An operand could be any data or a variable.

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Types of Operators in C++

In C++ we have 5 types of Operators:

  • Arithmetic Operators
  • Relational Operators
  • Logical Operators
  • Bitwise Operator
  • Assignment Operator

1. Arithmetic Operators:

Arithmetic operators in C++, similar to the arithmetic concepts. Arithmetic operators can only be applied to Numeric data types such as Integer, Float and double. In C++ we have 7 arithmetic operators.

Operator Operator Name Description Example
+ Addition This operator is used to add two operands 30 + 40 = 70
Subtraction This operator gives the difference between two operands 30 – 20 = 10

20 – 30 = -10

* Multiplication Multiply two operands a = 20;

b= 30;

a*b would be 600

/ Division Perform the division operation. If a= 20 and b= 10

a/b would be 2

% Module This operator provides the remainder of the integer division If a= 20 and b= 10

a%b would be 0

++ Increment Increase the value of operand by one If a = 10

a++ would be 11

Decrement Decrement the value of operand by one If a = 10

a– would be 9

Note: To perform the arithmetic operation we need numeric data types.

2. Relational Operator:

Relation operators used to tell the relation between two operands, operands could be of any data type. The relational operators give output in boolean value either true or False.

In C++ we have 6 types of Relational Operators:

Operator Operator Names Description Example
== Is equal to It checks whether two operands are equal or not (2 == 2) //true

2 == 2.0 //false

!= Not equal to It checks whether two operands are not equal. (2 != 3) //true.

(2 !=2) //false

> Greater than Check whether the left operand is greater than right operand (3 > 2) //true.

(2 > 3) //false

< Smaller than It checks whether the value of left operand is smaller than right operand (2 < 3) // true.

(3 < 3 )//false

>= Greater than equal to If the value of left operand is greater or equal to the right operand it will give true else false. (3 >= 3) // true.

(3 >= 4) //false

<= Smaller than Equal to It checks whether the value of left operand is smaller or equal to the right operand (1 <= 2) // true.

(12 <= 3)//false

3. Logical Operators

Logical Operators operate between two boolean values and return an answer in Boolean value, In C++ we have 3 types of local Operators.

Operator Operator Name Description Example
&& AND If both the operands are true then the result will be true else false (true && false) // false

(true && true) //true

|| OR If both the operands are false then only it will show false else the answer would be true (true || false) //true

(false || false)// false

! NOT It converts the false to true and true to false. !(true) // false

!(false) //true

4. Bitwise Operator:

The bitwise operator first the operators into binary format and then operate on them.

Example:

let a = 60 and b = 30

so, the binary form of 60 is 0011 1100 and binary form of 13 is 0000 1101

Then a & b would be =(0&0 0&0 1&0 1&0 1&1 1&1 0&0 0&0)= 0000 1100 = 12

Operator Operator Name Description
& Bit AND Perform the AND operation between two binary operands
| Bit OR Perform the OR operation between two binary operands
^ Bit XOR Perform the XOR operation between two binary operands
~ Bit One’s Complement Flip the binary, change 1 to 0 and 0 to 1
<< Left shift Shift the binary number to left
>> Right Shift It shifts the binary number to the right

5. Assignment Operators

Assignment operators are used for assigning a value to the variable.

Operator Operators Name Description Example
= Assignment Assign the right value to the left variable a = 20
+= Add and assign Add the right value in the left variable a += 30

which is equivalent to

a = a+30

-= Subtract and assign Subtract the right value from the left variable a -= 30

which is equivalent to

a = a-30

*= Multiply and assign Multiply the right value into the left variable a *= 30

which is equivalent to

a = a*30

/= Divide and assign Divide the right value from the left variable a /= 30

which is equivalent to

a = a/30

%= Assign the module Divide the right value from the left variable and assign the remainder to the left variable a %= 30

which is equivalent to

a = a%30

Summary

  • Operators are the special symbols which perform a specific operation on operands
  • Operator requires appropriate operands to perform the operation
  • An operand could be a variable or data itself.
  • In C++ we have 5 types of Operators Arithmetic, Logical, Relational, Bitwise and Assignment Operators.
  • Arithmetic Operators operate on Numeric datatypes
  • Relations Operators can Operate on Numerical as well as character datatypes and it gives output in a Boolean value
  • Logical Operators operate on boolean values.
  • Assignment operators used for assigning value to a variable.

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