den

den(x)

Denominator of the rational representation of x

Examples

In the julia programming language, the function den(x)

Returns the denominator of the rational representation of x.

julia> den(2//3)
3

Provide common examples of its use. If there are any common mistakes users make, add an example.

Find the denominator of a rational number:
```
julia> r = 5//7;
julia> den(r)
7
```
This example retrieves the denominator of the rational number r.
Handle integers as input:
```
julia> num = 10;
julia> den(num)
1
```
When an integer is passed to den, it returns 1 since integers have a denominator of 1.
Use with floating-point numbers:
```
julia> f = 3.14;
julia> den(f)
1
```
If a floating-point number is provided, the den function returns 1 as floating-point numbers do not have a denominator.

Common mistake example:

julia> den("hello")
ERROR: MethodError: no method matching den(::String)

In this example, the input provided is a string, which is not a valid argument for den. It's important to ensure that the input to den is a rational number or a valid type for the function to avoid such errors.

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den

Examples

See Also

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