C++ cmath sqrt() function
Example
Return the square root of different numbers:
cout << sqrt(0);
cout << sqrt(1);
cout << sqrt(9);
cout << sqrt(0.64);
cout << sqrt(-25);
Definition and Usage
The sqrt() function returns the square root of a number.
The sqrt() function is defined in the <cmath> header file.
Syntax
One of the following:
sqrt(double number);sqrt(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 square root of a number. |
|---|
