The round() is an inbuilt method in Ruby returns a number rounded to a number nearest to the given number with a precision of the given number of digits after the decimal point. In case the number of digits is not given, the default value is taken to be zero.
Syntax: num.round(ndigits)
Parameters: The function needs a number and 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 rounded value.
Example 1:
# Ruby program for round() # method in Numeric # Initialize a number num1 = -16.7834
num2 = -16.78324
num3 = 16.873
# Prints round puts num1.round(1)
puts num2.round() puts num3.round() |
Output:
-16.8 -17 17
Example 2:
# Ruby program for round() # method in Numeric # Initialize a number num1 = 12.32
num2 = -1321.998321
num3 = -12.2321
# Prints round puts num1.round(1)
puts num2.round(2)
puts num3.round(3)
|
Output:
12.3 -1322.0 -12.232