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# C++ Boolean Expressions

## Boolean Expression

A Boolean expression is a C++ expression that returns a boolean value: `1` (true) or `0` (false).

You can use a comparison operator, such as the greater than (`>`) operator to find out if an expression (or a variable) is true:

### Example

int x = 10;
int y = 9;
cout << (x > y); // returns 1 (true), because 10 is higher than 9
Run example »

Or even easier:

### Example

cout << (10 > 9); // returns 1 (true), because 10 is higher than 9
Run example »

In the examples below, we use the equal 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
Run example »

### Example

cout << (10 == 15);  // returns 0 (false), because 10 is not equal to 15
Run example »

Booleans are the basis for all C++ comparisons and conditions.

## Exercise:

Fill in the missing parts to print the values `1` (for true) and `0` (for false):

``` isCodingFun = true;
isFishTasty = false;
cout << ;
cout << ;
```

Start the Exercise