print vs puts in Ruby

print_vs_puts.rb

# Prints five dots in a single line
5.times do
  print "."
end

# Prints five dots in five different lines
5.times do
  puts "."
end

# Acts as expected.
# Prints five dots in five different lines, with a time interval of 2 seconds between each of the prints.
5.times do
  puts "."
  sleep 2
end

# The following acts a bit strange
# Waits for ten seconds without any out put. Then prints five dots at once.
5.times do
  print "."
  sleep 2
end

# This can be solved easily by flushing out $stdout
# Prints five dots in a single line with a time interval of 2 seconds between each print

5.times do
  print "."
  $stdout.flush
  sleep 2
end