iseven

iseven(x::Integer) -> Bool

Returns true is x is even (that is, divisible by 2), and false otherwise.

julia> iseven(9)
false

julia> iseven(10)
true

Examples

Check if a number is even:
```
julia> iseven(9)
false

julia> iseven(10)
true
```
This example demonstrates how to use the iseven function to check if a given number is even or not.
Use in conditional statements:
```
julia> x = 17;
julia> if iseven(x)
          println("The number is even.")
      else
          println("The number is odd.")
      end
The number is odd.
```
The iseven function can be used in conditional statements to perform different actions based on whether a number is even or odd.
Check evenness for a range of numbers:
```
julia> numbers = [1, 2, 3, 4, 5, 6];
julia> even_numbers = filter(iseven, numbers)
3-element Array{Int64,1}:
2
4
6
```
In this example, the iseven function is used with the filter function to extract only the even numbers from a given array.

Common mistake example:

julia> iseven(3.5)
ERROR: MethodError: no method matching iseven(::Float64)

The iseven function only works with integers (Integer type) and not with floating-point numbers. Make sure to use it with the correct data type.

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