Ruby Float positive()方法及示例

float positive()是一个float类方法，用于检查浮点数是否为正数。

语法： float.positive()
参数： 要检查的浮点数
返回： 布尔值 返回true – 如果值是正的，或者返回false – 如果值是负的。

例子 #1 :

# Ruby program for positive() method
 
# Initializing value
a = -100.7 - 10.4
b = -100 * 2000.0
c = (22 + 7.1) * 4
 
# Printing result
puts "a is positive : #{a.positive?}\n\n"
puts "b is positive : #{b.positive?}\n\n"
puts "c is positive : #{c.positive?}\n\n"

输出:

a is positive : false

b is positive : false

c is positive : true

例子#2 。

# Ruby code for positive() method
 
# Initializing value
a = -56.23333333
b = 10000.0
c = -(22 + 7.1)
 
# Printing result
puts "a is positive : #{a.positive?}\n\n"
puts "b is positive : #{b.positive?}\n\n"
puts "c is positive : #{c.positive?}\n\n"

输出:

a is positive : false

b is positive : true

c is positive : false