Ruby | Numeric round() function - Coding

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

Reffered: https://www.geeksforgeeks.org

Ruby

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