() operator Call operator. Apair of parentheses “()” following a function name. The operator causes a function to be invoked. Arguments to the function may be passed inside the parentheses.

++ operator Increment operator. Adds 1 to the operand; ++i is equivalent to i = i + 1.

+= operator Compound assignment operator that adds the right-hand operand to the left and stores the result in the left-hand operand; a += b is equivalent to a = a + b.

. operator Dot operator. Left-hand operand must be an object of class type and the right-hand operand must be the name of a member of that object. The operator yields the named member of the given object.

:: operator Scope operator. Among other uses, the scope operator is used to access names in a namespace. For example, std::cout denotes the name cout from the namespace std.

= operator Assigns the value of the righthand operand to the object denoted by the left-hand operand.

-- operator Decrement operator. Subtracts 1 from the operand; --i is equivalent to i = i - 1.

<< operator Output operator. Writes the right-hand operand to the output stream indicated by the left-hand operand: cout << "hi" writes hi to the standard output. Output operations can be chained together: cout << "hi" << "bye" writes hibye.

>> operator Input operator. Reads from the input stream specified by the left-hand operand into the right-hand operand: cin >> i reads the next value on the standard input into i. Input operations can be chained together: cin >> i >> j reads first into i and then into j.

#include Directive that makes code in a header available to a program.

== operator The equality operator. Tests whether the left-hand operand is equal to the right-hand operand.

!= operator The inequality operator. Tests whether the left-hand operand is not equal to the right-hand operand.

<= operator The less-than-or-equal operator. Tests whether the left-hand operand is less than or equal to the right-hand operand.

< operator The less-than operator. Tests whether the left-hand operand is less than the right-hand operand.

>= operator Greater-than-or-equal operator. Tests whether the left-hand operand is greater than or equal to the right-hand operand.

> operator Greater-than operator. Tests whether the left-hand operand is greater than the right-hand operand.