Ruby整数甚至？示例函数

偶？ Ruby 中的函数返回一个布尔值。如果数字是偶数则返回true，否则返回false。

Syntax: number.even?

Parameter: The function takes the integer which is to be checked for even or not.

Return Value: The function returns a boolean value which determines if the value is even or not.

示例 #1：

# Ruby program of Integer even? function
  
# Initializing the numbers 
num1 = 19
num2 = 2
num3 = 28
num4 = 13
   
# Prints the integer division 
# and its remainder 
puts num1.even? 
puts num2.even?
puts num3.even? 
puts num4.even?

输出：

false
true
true
false

示例 #2：

# Ruby program of Integer even? function
  
# Initializing the numbers 
num1 = 18
num2 = 200
num3 = 2987
num4 = 13
   
# Prints the integer division 
# and its remainder 
puts num1.even? 
puts num2.even?
puts num3.even? 
puts num4.even?

输出：

true
true
false
false