C++Boolean Expressions
Boolean Expressions
ABoolean expression is a piece of code that compares values or variables and returns a boolean value:1 (true) or0 (false).
Boolean expressions are the foundation of decision making in programming - they let your program decide what to do based on whether something is true or false.
You can use acomparison operator, such as thegreater than (>) operator, to find out if an expression (or variable) is true or false:
Example
int x = 10;
int y = 9;
cout << (x > y); // returns 1 (true), because 10 is higher than 9
Try it Yourself »int y = 9;
cout << (x > y); // returns 1 (true), because 10 is higher than 9
Or even easier:
In the examples below, we use theequal to (==) operator to evaluate an expression:
Example
int x = 10;
cout << (x == 10); // returns 1 (true), because the value of x is equal to 10
Try it Yourself »cout << (x == 10); // returns 1 (true), because the value of x is equal to 10
