Operators are symbols used to perform operations on variables and values. C++ supports arithmetic ($+, -, *, /, %$), relational ($==, !=, >, <$), logical ($&&, ||, !$), and bitwise ($&, |, \sim, \wedge, <<, >>$) operators.

For calculations, comparisons, and boolean logic in conditional statements.

• Basic arithmetic/logical: $O(1)$
• Bitwise: $O(1)$

cpp Standard
int a = 10, b = 20;
bool result = (a < b) && (b > 15); // Logical AND
int bitwise = (a << 1);            // Left shift (multiplies by 2)

• Confusing = (assignment) with == (comparison).
• Integer division: 5 / 2 is 2, not 2.5. Use 5.0 / 2 for floating point results.
• Operator precedence: Not using parentheses () to clarify complex expressions.