def ask question
puts question
reply = gets.chomp.downcase
while reply != 'yes' && reply != 'no'
puts 'Please answer "yes" or "no".'
puts question
reply = gets.chomp.downcase
end
if reply == 'yes'
return true
else
return false
end
end
puts 'Hello, and thank you for ...'
puts
ask 'Do you like eating tacos?'
ask 'Do you like eating burritos?'
wets_bed = ask 'Do you wet the bed?'
ask 'Do you like eating chimichangas?'
ask 'Do you like eating sopapillas?'
puts 'Just a few more questions...'
ask 'Do you like drinking horchata?'
ask 'Do you like eating flautas?'
puts
puts 'DEBRIEFING'
puts 'Thank you for ...'
puts
puts wets_bed
Erez Ben offers an alternative:
def ask question
while question != ''
puts question
reply = gets.chomp.downcase
if reply == 'yes'
return true
elsif reply == 'no'
return false
end
puts ' Please answer "yes" or "no".'
end
end
puts ' Hello, and thank you for...'
puts
ask ' Do you like eating tacos?' # Ignore this return value
ask ' Do you like eating burritos?' # And this one
wets_bed = ask ' Do you wet the bed?' # Save this return value
ask ' Do you like eating chimichangas?'
ask ' Do you like eating sopapillas?'
puts ' Just a few more questions...'
ask ' Do you like drinking horchata?'
ask ' Do you like eating flautas?'
puts
puts ' DEBRIEFING:'
puts ' Thank you for...'
puts
puts wets_bed
Eelco also offers an alternative:
def ask question
while true
puts question
reply = gets.chomp.downcase
if reply == 'yes'
return true
else if reply == 'no'
return false
else
puts ' Please answer "yes" or "no".'
end
end
end
end
puts ' Hello, and thank you for...'
puts
ask ' Do you like eating tacos?' # Ignore this return value
ask ' Do you like eating burritos?' # And this one
wets_bed = ask ' Do you wet the bed?' # Save this return value
ask ' Do you like eating chimichangas?'
ask ' Do you like eating sopapillas?'
puts ' Just a few more questions...'
ask ' Do you like drinking horchata?'
ask ' Do you like eating flautas?'
puts
puts ' DEBRIEFING:'
puts ' Thank you for...'
puts
puts wets_bed
2. Old-school Roman numerals.
def roman number
m_length = 0
d_length = 0
c_length = 0
l_length = 0
x_length = 0
v_length = 0
i_length = 0
if number >= 1000
m_length = number/1000
number = number%1000
end
if number >= 500
d_length = number/500
number = number%500
end
if number >= 100
c_length = number/100
number = number%100
end
if number >= 50
l_length = number/50
number = number%50
end
if number >= 10
x_length = number/10
number = number%10
end
if number >= 5
v_length = number/5
number = number%5
end
if number < 5
i_length = number/1
number = number%10
end
puts 'M'*m_length + 'D'*d_length + 'C'*c_length + 'L'*l_length + 'X'*x_length +
'V'*v_length + 'I'*i_length
end
roman 2999
3. Modern Roman numerals.
def roman number
m_length = 0
n900_length = 0
d_length = 0
n400_length = 0
c_length = 0
n90_length = 0
l_length = 0
n40_length = 0
x_length = 0
n9_length = 0
v_length = 0
n4_length = 0
i_length = 0
if number >= 1000
m_length = number/1000
number = number%1000
end
if number >= 900
n900_length = number/900
number = number%900
end
if number >= 500
d_length = number/500
number = number%500
end
if number >= 400
n400_length = number/400
number = number%400
end
if number >= 100
c_length = number/100
number = number%100
end
if number >= 90
n90_length = number/90
number = number%90
end
if number >= 50
l_length = number/50
number = number%50
end
if number >= 40
n40_length = number/40
number = number%40
end
if number >= 10
x_length = number/10
number = number%10
end
if number >= 9
n9_length = number/9
number = number%9
end
if number >= 5
v_length = number/5
number = number%5
end
if number >= 4
n4_length = number/4
number = number%4
end
if number < 4
i_length = number/1
number = number%10
end
puts 'M'*m_length + "CM"*n900_length + 'D'*d_length + 'CD'*n400_length + 'C'*c_length +
'XC'*n90_length + 'L'*l_length + 'XL'*n40_length + 'X'*x_length + 'IX'*n9_length +
'V'*v_length + 'IV'*n4_length + 'I'*i_length
end
x = ''
while x != 'exit'
puts 'Enter a number, and the equivalent roman numeral will be returned.'
puts 'Type exit to quit.'
x = gets.chomp
roman x.to_i
end
