Ruby Programming · all questions

Control Structures in Ruby
practice.

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Q81

The following syntax is used for the ruby case statement.

case expression
when expression , expression ... then
   code ...
else
   code 
end

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Q82

What is the output of the given code?

age =  4
case age
puts "baby" when 0 .. 2
puts "little child" when 3 .. 6
puts "child" when 7 .. 12
puts "youth" when 13 .. 18
puts "adult" else
end

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Q83

What is the output of the given code?

for counter in 1..5
case counter
when 0 .. 2
    puts counter
    puts "baby"
when 3 .. 6
    puts counter
    puts "little child"
when 7 .. 12
    puts counter
    puts "child"
else
    puts counter
    puts "adult"
end
end

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Q84

What is the output of the given code?

string = gets.chomp
case string
when string = "a"
print "alphabet a"
when string = "b"
print "alphabet b"
when string = "c"
print "alphabet c"
else 
    print "some other alphabet"
end

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Q85

The expression specified by the when clause is evaluated as the left operand. If no when clauses match, case executes the code of the else clause.

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Q86

What is the output of the given code?

length=gets.chomp
case length.length
when length=4
print "length is 4"
when length=5
print "length is 5"
end

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Q87

What is the output of the given code?

length=gets.chomp
case length.reverse.length
when length=4
print "length is 4"
when length=5
print "length is 5"
end

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Q88

What is the output of the given code?

l=9
case l
print "ruby" when l==9
print "language" when l==10
end

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Q89

A case statement compares the expression specified by case and that specified by when using the === operator and executes the code of the when clause that matches.

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Q90

While loop checks the condition and the loop keeps on running till the condition is true, it stops when the condition becomes false.

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Q91

What is the output of the given code?

counter = 1
while counter < 11
  puts counter
  counter = counter + 1
end

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Q92

What is the output of the given code?

counter = true
while counter !=false
  puts counter
end

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Q93

What is the output of the given code?

i = 0
while i < 5
  puts i
   i=(i+1)**2
end

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Q94

What is the output of the given code?

a=5
b=15
while a&&b
puts a+b
end

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Q95

What is the output of the given code?

a=5
b=15
while b>a
puts a*(b-a)
while a>b
  a+=1
  b-=1
end
end

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Q96

What is the output of the given code?

i = 3
while i > 0 do
  print i
  i -= 1
end

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Q97

What is the output of the given code?

i = 50
while i > 25 do
  print 50/i
  i -= 1
end

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Q98

What is the output of the given code?

a = 5
b=10
while a<b do
  puts a*b
  a+=2
  b-=2
  end

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Q99

What is the output of the given code?

i = 50 
j=55
while i > 25 && j>35 do
  puts 50*j/i
  i -= 1
  j-=2
end

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Q100

What is the output of the given code?

i = 50 
j=55
while i > 25 && i*j<100 do
  puts (50*j)/i
  i -= 1
  j-=2
end

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