how to make integer from string ruby code example

Example 1: integer to string ruby

my_int = 69
my_int_to_string = my_int.to_s

puts my_int.class # Integer
puts my_int_to_string.class # String

Example 2: converst string to int ruby

Integer('5abc') #=> ArgumentError: invalid value for Integer(): "5abc"
Integer('5') #=> 5