C++ Operators

You declare a variable after that operators are used to perform logical or mathematical operations on that variable’s values. For example, int age = 27; where the “=” symbol is an assignment operator that assigns 27 to the age variable.

C++ programming language support many operators that are divided into different groups.

1. Arithmetic operators
2. Assignment operators
3. Relational operators
4. Logical operators

 Let’s discuss them one by one.

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1. Arithmetic operators

It is a well-known group of operators to perform a mathematical operation on variables. Here is the list of arithmetic operators along with their operational effects.

Operator	Name	Description	Example
+	Addition	Used to add two values	Num1+num22
–	Subtraction	Subtract one value from the other	num1-num2
*	Multiplication	Multiplying two values	Num21*num2
/	Division	Divide two values	num1/num2
%	Modules	Used to get division reminder	Num1%num2

Example Arithmetic operators

//Arathmatic operators
#include<iostream>
using namespace std;
int main()
{
	int num1=8, num2=2;
	
	cout<<"num1 + num2 = "<<num1+num2<<endl;
	cout<<"num1 - num2 = "<<num1-num2<<endl;
	cout<<"num1 * num2 = "<<num1*num2<<endl;
	cout<<"num1 / num2 = "<<num1/num2<<endl;
	cout<<"num1 % num2 = "<<num1%num2<<endl;
	
}

Output

num1 + num2 = 10
num1 - num2 = 6
num1 * num2 = 16
num1 / num2 = 4
num1 % num2 = 0

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2. Assignment Operators

As its name indicated that they are used to assign value to the variables.

Let’s have look at different assignment operators with examples.

Operator	Name	Equals to
=	num1= num2	Num1 = num2
+=	num1+=num2	num1 = num1+num2
-=	num1-=num2	num1 = num1-num2
*=	num1*=num2	num1 = num1*num2
/=	num1/=num2	num1 = num1/num2
%=	num1%=num2	num1 = num1%num2

Example Assignment Operators

//Assignment operator
#include<iostream>
using namespace std;
int main()
{
	int num1=8, num2=2;
	
	num1+=num2;
	cout<<"num1 += num2 = "<<num1<<endl;
	
}

Output

num1 += num2 = 10

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3. Relational Operators

Relational c++ operators are also known as comparison operators used to compare two values. They check the condition of both values and give “true as 1” or “false as 0” results depending on the relational operator used.

Here is the list of relational operators with examples

Operator	Name	Example
==	Equals to	4==5 give result false
!=	Not equal to	4!=5 gives the result true
<	Less then	4<5 give result true
>	Greater then	4>5 gives the result false
<=	Less than equal to	4<=5 give result false
>=	Greater than equal to	4>=5 give result false

Example Relational Operators

//Relational operator
#include<iostream>
using namespace std;
int main()
{
	int num1=8, num2=2;
	int result;
	
	
    result = (num1 == num2);   // false
    cout << "8 == 2 is " << result << endl;

    result = (num1 != num2);  // true
    cout << "8 != 2 is " << result << endl;

    result = (num1 > num2);   // false
    cout << "8 > 2 is " << result << endl;

    result = (num1 < num2);   // true
    cout << "8 < 2 is " << result << endl;

    result = num1 >= num2;  // false
    cout << "8 >= 2 is " << result << endl;

    result = (num1 <= num2);  // true
    cout << "8 <= 2 is " << result << endl;

}

Output

8 == 2 is 0
8 != 2 is 1
8 > 2 is 1
8 < 2 is 0
8 >= 2 is 1
8 <= 2 is 0

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4. Logical operators

Logical operators in c++ are used to check whether the condition is true or false. They are commonly used with conditional statements.

Operator	Name	Example	Description
&&	And operator	Num1 && num2	True when both num1 and num2 are true otherwise give a false result
||	Or operator	Num1 || num2	True when num1 or num2 is true else give a false result
!	Not operator	!num	True when num is false

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