The ceil() is an inbuilt function in Ruby returns the smallest number greater than or equal to rat with a precision of ndigits decimal digits. ndigits by default is 0. It returns a rational when ndigits is positive, otherwise returns an integer.
Syntax: rat.ceil(ndigits)
Parameters: The function accepts a number ndigits which specifies the number of digits to be rounded off. If ndigits is not given then, default value is taken to be zero.
Return Value: It returns the smallest number greater than or equal to rat with a precision of ndigits
Example 1:
# Ruby program for ceil() method # Initialize rational number rat1 = Rational(-4, 3)
# Prints the rational number puts rat1.ceil() |
Output:
-1
Example 2:
# Ruby program for ceil() method # Initialize rational number rat1 = Rational('123.456')
# Prints the rational number puts rat1.ceil(1)
puts rat1.ceil(-1)
|
Output:
247/2 130