Assignment operators in C++

In this tutorial, we are going to discuss the Assignment operators in C++. These assignment operators are used for assignment purposes, which means when we are required to assign values to the variables.

We will see what are some of the different available symbols for assignment operators, and we will try to use them in some examples, so that it becomes easy for us to understand the concept, and later we can use them comfortably in our C++ programs.

Assignment operators in C++

Operator	Description	Example
=	Assignment operator	a = 5; Assign the value 5 to variable a.
+=	Add and assign	a += 5; Add 5 to the existing value in variable a and store the result back to a.
-=	Subtract and assign	a -= 2; Subtract 2 from the existing value in variable a and store the result back to a.
*=	Multiply and assign	a *= 4; Multiply the existing value in variable a by 4 and store the result back to a.
/=	Divide and assign	a /= 2; Divide the existing value in variable a by 2 and store the result back to a.
%=	Modulus and assign	a %= 2; Divide the existing value in variable a by 2 and store the remainder back to a.
&=	Bitwise AND and assign	a &= 4; Perform a bitwise AND operation between the value in variables a and 4, and store the result back to a.
|=	Bitwise OR and assign	a |= 4; Perform a bitwise OR operation between the value in variables a and 4, and store the result back to a.
^=	Bitwise XOR and assign	a ^= 4; Perform a bitwise XOR operation between the value in variables a and 4, and store the result back to a.
<<=	Left shift and assign	a <<= 4; Perform a bitwise left shift operation on the value in variable a by 4 positions, and store the result back to a.
>>=	Right shift and assign	a >>= 4; Perform a bitwise right shift operation on the value in variable a by 4 positions, and store the result back to a.

As you can see in the above table, we have listed some assignment operator symbols. Let’s have a look at some of the symbols in action through a C++ program, and for the rest, you can use them as per the requirement in the C++ programs.

#include <iostream>
int main()
{
int a = 10, b = 2;
a +=b; // similar to a = a+b;
a -=5; // similar to a = a – 5;
std::cout << “Value of a: “<<a << std::endl;
// you can try others.
return 0;
}

As you can see in the above program, we have tried using some assignment operator symbols. For the rest of the symbols, you can use them as and when required in your C++ programs.

Output –

Value of a: 7

As you can see, we have got the output as 7, since first, we are adding 2 to 10, making it 12, and then subtracting 5 from the result, which makes it 7. So, you can use the assignment operators as and when required in your C++ program.

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