Ruby Integer truncate() function with example

The truncate() function in Ruby returns an int truncated value to a precision of ndigits decimal digits. When the precision is negative, the returned value is an integer with at least ndigits.abs trailing zeros. It returns itself when ndigits is zero or positive. The default value of ndigits is considered to be zero.

Syntax: number.truncate(ndigits)

Parameter: The function takes the integer which is to be truncated and a non-mandatory ndigits, upto which it has to be truncated.

Return Value: The function returns the truncated value to a precision of ndigits.

Example #1:

# Ruby program for truncate function

# Initializing the number
num1 = 120
ndigits1 = -2

num2 = 120
ndigits2 = -2

num3 = -19
ndigits3 = -1

num4 = 120

# Prints the truncated value
puts num1.truncate(ndigits1)
puts num2.truncate(ndigits2)
puts num3.truncate(ndigits3)
puts num4.truncate

Output:

100
100
-10
120

Example #2:

# Ruby program for truncate function

# Initializing the number
num1 = 190
ndigits1 = -1

num2 = 10
ndigits2 = 2

num3 = 18
ndigits3 = -1

num4 = 1123

# Prints the truncated value
puts num1.truncate(ndigits1)
puts num2.truncate(ndigits2)
puts num3.truncate(ndigits3)
puts num4.truncate

Output:

190
10
10
1123