The C++ programming language offers different types of operators. These operators are used in expressions that evaluate to a single value. Sometimes the operator is used in decision making that changes the flow of the program.
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Here is the diagram that classifies C++ operators into different categories.
C++ Operators Classification
Arithmetic Operators
Operator
Description
+
Addition operation
–
Subtraction operation
*
Multiplication
/
Division operation
%
Mod operation ( gives remainder)
Assignment Operators
Operator
Description
=
Assigns right-value to left-value
+=
Assigns ( left-value + right-value) to left-value
-=
Assigns ( left-value – right-value) to left-value
*=
Assigns ( left-value * right-value) to left-value
/=
Assigns ( left-value/ right-value ) to left-value
%=
Assigns (left-value % right-value) to left-value
>>=
Right-shift and then assign to left-value
<<=
Left-shift and then assign to left-value
&=
Bitwise AND operation and then assign to left-value
|=
Bitwise OR operation and then assign to left-value.
~=
Bitwise complement and then assign to left-value
Note: In the following expression is left-value and is right-value.
is left-value and 
is right-value.