| 3.1 |
puts 'enter an integer'
x=gets
x=x.to_i
xnew=x/2
xnew=2*xnew
if x==xnew
puts 'you entered an even integer'
else
puts 'you entered an odd integer'
end
|
| 3.2a |
puts"enter a value between five and ten "
x=gets
x=x.to_i
if (x>=5) and (x<=10)
puts "Great you entered a proper value!"
else
puts "You have entered an improper value"
end
|
| 3.2b |
puts "Enter an integer between five and ten"
x=gets.to_i
case
when (x<5) then puts "x is smaller then the interval [5,10]"
when ((x>=5) and (x<=10)) then puts "x is within the interval [5,10]"
else puts "x is greater then the interval [5,10]"
end
|
| 3.3 |
puts "Enter an integer"
x=gets.to_i
if (x==0) then puts "The value of the unit pulse function at this input is 1"
else puts "The value of the unit pulse function at this input is 0"
end
|
| 3.4 |
puts "plese enter three integers"
x=gets.to_i
y=gets.to_i
z=gets.to_i
if x>0 then
if y>0 then
if z>0 then
puts "three of the integers are greater then 0"
else
puts "two of the integers are greater then 0"
end
else
if z>0 then
puts "two of the integers are greater then 0"
else
puts "one of the integers is greater then 0"
end
end
else
if y>0 then
if z>0 then
puts "two of the integers are greater then 0"
else
puts "one of the integers is greater then 0"
end
else
if z>0 then
puts "one of the integers is greater then 0"
else
puts "none of the integers are greater then 0"
end
end
end
|
| 3.5 |
puts "plese enter three integers"
x=gets.to_i
y=gets.to_i
z=gets.to_i
case
when (x>0 and y>0 and z>0) then puts "three of the integers are greater then 0"
when (x>0 and y>0 and z<0) then puts "two of the integers are greater then 0"
when (x>0 and y<0 and z>0) then puts "two of the integers are greater then 0"
when (x<0 and y>0 and z>0) then puts "two of the integers are greater then 0"
when (x>0 and y<0 and z<0) then puts "one of the integers is greater then 0"
when (x<0 and y>0 and z<0) then puts "one of the integers is greater then 0"
when (x<0 and y<0 and z>0) then puts "one of the integers is greater then 0"
when (x<0 and y<0 and z<0) then puts "none of the integers are greater then 0"
end
|
| 3.6 |
puts "please enter the x and y coordinates (integers between -4 and 4 inclusive)"
x=gets.to_i
y=gets.to_i
case
when (((x<-2) or ((x<2) and (y<0)))and((x<5) and (y<5) and (x>-5) and (y>-5)))
then puts "the altitude is 0m"
when (((((x<2) and (y>-1)) or ((x>1)and(y<0))) and((x<5) and (y<5) and (x>-5)
and (y>-5)))) then puts "the altitude is 1m"
when ((((x>1)and(y>-1))and((x<5) and (y<5) and (x>-5) and (y>-5)))) then puts
"the altitude is 2m"
else puts "the input coordinates were invalid"
end
|
| 3.7 |
puts "please enter in a four digit number one digit at a time starting from the
thousands"
d1, d2, d3, d4 = gets.to_i, gets.to_i, gets.to_i, gets.to_i
puts "please enter in an one digit number to divide the above by"
div=gets.to_i
case
when (div==1) then puts "1 divides all integers"
when (div==2) then
if d4 % 2 == 0
puts "2 divides the number"
else
puts "2 does not divide the number"
end
when (div==3) then
if ((d1+d2+d3+d4) % 3) == 0
puts "3 divides the number"
else
puts "3 does not divide the number"
end
when (div==4) then
if ((10*d3+d4) % 4) == 0
puts "4 divides the number"
else
puts "4 does not divide the number"
end
when (div==5) then
if (d4==5) or (d4==0)
puts "5 divides the number"
else
puts "5 does not divide the number"
end
when (div==6) then
if ((d4 % 2) == 0) and ((d1+d2+d3+d4) % 3) == 0
puts "6 divides the number"
else
puts "6 does not divide the number"
end
when (div==7) then
if ((d1*1000 + d2*100 + d3*10) - (d4 * 2)) % 7 == 0
puts "7 divides the number"
else
puts "7 does not divide the number"
end
when (div==8) then
if (d3+d2+d1) % 8 == 0
puts "8 divides the number"
else
puts "8 does not divide the number"
end
when (div==9) then
if (d1+d2+d3+d4) % 9 == 0
puts "9 divides the number"
else
puts "9 does not divide the number"
end
else puts "the dividend entered was not valid"
end
|
| 3.8 |
|
| 3.9 |
puts "Please enter a year"
year = gets.to_i
if year % 4 == 0 && year % 100 != 0
puts "This is a leap year"
else if year % 400 == 0
puts "This is a leap year"
else
puts "This is not a leap year"
end
|
| 3.10 |
time = Time.now
t = time.strftime("%H").to_i
case
when ((t<=11)&&(t>=4)) then puts "Good morning world"
when ((t>=12)&&(t<=17)) then puts "Good afternoon world"
when ((t>=18)&&(t<=21)) then puts "Good evening world"
when ((t>=22)&&(t<=3)) then puts "Good night world"
end
|
| 3.11a |
puts "enter the first integer ==>"
x=gets
x = x.to_i
puts "enter the second integer ==>"
y = gets
y = y.to_i
if(xy)
puts"Most recent integer is smaller."
else
puts"The last two integers are equal."
end
x = y
y = gets
y = y.to_i
if(xy)
puts"Most recent integer is smaller."
else
puts"The last two integers are equal."
end
|
| 3.11b |
puts "enter the first integer ==>"
x=gets
x = x.to_i
puts "enter the second integer ==>"
y = gets
y = y.to_i
case
when (x < y) then puts"Most recent integer is larger."
when (x > y) then puts"Most recent integer is smaller."
else
puts"Last two integers are equal."
end
x = y
y = gets
y = y.to_i
case
when (x < y) then puts"Most recent integer is larger."
when (x > y) then puts"Most recent integer is smaller."
else
puts"Last two integers are equal."
end
|
| 3.12a |
puts "enter a value ==>"
x = gets
x = x.to_i
largest = x
smallest = x
puts "enter a value ==>"
x = gets
x = x.to_i
if(x > largest)
largest = x
else if(x < smallest)
smallest = x
end
x = gets
x = x.to_i
if(x > largest)
largest = x
else if(x < smallest)
smallest = x
end
puts "The largest input was: " + largest
puts "The smallest input was: " + smallest
|
| 3.12b |
|
| 3.13 |
The code outputs a sorted list of numbers.
|
| 3.14 |
number = gets.to_i
if (number % 2) == 0
puts "It's even!"
else
puts "It's odd."
end
|
| 3.16a |
input = gets.chomp
puts input if input = 'a'
|
| 3.16b |
input = gets.chomp
if input = 'awesome'
puts input
else
puts 'Cheese'
end
|
| 3.16c |
input = gets.chomp
puts input if input = '42'
|
| 3.17 |
puts "Please enter how many slices of pizza you need"
p=gets.to_i
if (p % 8 == 0) then
puts "You will need " + (p/8).to_s +" pies of pizza."
else
puts "You will need " + (((p-(p%8))/8 + 1)).to_s +" pies of pizza."
end
|
| 3.18 |
puts "Enter the first x coordinate==>"
xOne=gets
puts "Enter the first y coordinate==>"
yOne=gets
puts "Enter the second x coordinate==>"
xTwo=gets
puts "Enter the second y coordinate==>"
xTwo=gets
if(xOne == xTwo)
puts "the line is vertical"
elseif( yOne == yTwo)
puts "The line is horizontal"
else
slope = (yOne - yTwo) / (xOne - xTwo)
puts "The slope of the line is " + slope
end
|
| 3.19 |
puts "enter the first number==>"
x = gets.to_i
puts "enter the second number==>"
y = gets.to_i
if( x % y == 0)
puts x + " is divisible by " + y
end
if( y % x == 0)
puts y + " is divisible by " + x
end
|
| 3.20 |
puts 'Hello! Who is this?'
input = gets.chomp
if input == 'Frank'
puts 'Hey Frank. How's it going?'
elsif input == 'Mary'
puts 'Hi Mary. Where have you been lately?'
elsif input == 'Susan'
puts 'Heya Susan, how's it hangin?'
end
|
