C++ Else
The else Statement
Use the else statement to specify a block of code to be executed
if the condition is false.
Syntax
if (condition) {
// block of code to be executed if the condition is true
} else {
// block of code to be executed if the condition is false
}
In the example below, the program checks the value of time.
If it is less than 18, it prints "Good day". Otherwise, it prints "Good evening":
Example
int time = 20;
if (time < 18) {
cout << "Good day.";
} else {
cout << "Good evening.";
}
// Outputs "Good evening."
Try it Yourself »
Example explained
Because time is 20, the condition time < 18 is false,
so the code inside the else block runs and prints "Good evening.".
If time was less than 18, the program would print "Good day." instead.
Using a Boolean Variable
You can also store the condition in a boolean variable and use it in the if...else statement.
This can make the code easier to read.
Example
int time = 20;
bool isDay = time < 18;
if (isDay) {
cout << "Good day.";
} else {
cout << "Good evening.";
}
// Outputs "Good evening."
Try it Yourself »
Tip: A name like isDay makes it easy to understand what the condition means.
