Real Life Example
Let's use booleans in a real-life example where we want to find out if a person is old enough to vote.
In the example below, we use the >= comparison operator to find out if the age (25) is greater than OR equal to the voting age limit, which is set to 18:
Example
int myAge = 25;
int votingAge = 18;
cout << (myAge >= votingAge);
// returns 1 (true), meaning 25 year olds are allowed to vote!
Cool, right? An even better approach (since we are on a roll now), would be to wrap the code above in an if...else statement, so we can perform different actions depending on the result:
Example
int myAge = 25;
int votingAge = 18;
if (myAge >= votingAge) {
cout << "Old enough to vote!";
} else {
cout << "Not old enough to vote.";
}
// Outputs: Old enough to vote!
Note: Booleans are the basis for all C++ comparisons and conditions. You will learn more about conditions (
if...else) in the next chapter.
