Types of operators

1. Arithmetic: +, -, *, / and % perform numeric calculations.
2. Relational: <, <=, >, >=, == and != compare values.
3. Logical: &&, || and ! combine or reverse conditions.
4. Bitwise: &, |, ^, ~, << and >> work with the bits of integers.
5. Assignment: = stores a value; += and similar forms combine calculation and assignment.
6. Increment and decrement: ++ adds one and -- subtracts one.
7. Conditional: ?: selects one of two expressions based on a condition.

Classification by number of operands

1. Unary: Works on one operand, such as -x or !ready.
2. Binary: Works on two operands, such as a + b.
3. Ternary: Works with three operands. The conditional operator is written condition ? value1 : value2.

Example

In total = price * quantity;, * multiplies price and quantity, and = stores the result in total. In age >= 18 && has_id, >= compares age with 18 and && combines the two conditions.

Important points

Do not confuse = with ==: one assigns and the other compares. Likewise & is bitwise AND, while && is logical AND. Parentheses can make grouping clear. Choose types and input values that make the operation valid.

Reference table

Key points

• An operand is the value or expression an operator acts on.
• Operator purpose and operand count are two different classifications.