C++ cmath ceil() function
Example
Round numbers up to the nearest integer:
cout << ceil(0.60);
cout << ceil(0.40);
cout << ceil(5);
cout << ceil(5.1);
cout << ceil(-5.1);
cout << ceil(-5.9);
Definition and Usage
The ceil() function rounds a number UP to the nearest integer.
The ceil() function is defined in the <cmath> header file.
Tip: To round a number DOWN to the nearest integer, look at the floor() function.
Tip: To round a number to the nearest integer in either direction, look at the round() function.
Syntax
One of the following:
ceil(double number);ceil(float number);Parameter Values
| Parameter | Description |
|---|---|
| number | Required. Specifies a number. If the number is an integer type then it will be treated as a double. |
Technical Details
| Returns: | A float value (if the argument is float) or double value (in any other case) representing the nearest integer greater or equal to a number. |
|---|
