Selection statements

if c=1 then
  writeln('c equals 1')
end-if

if c=1 then
  writeln('c equals 1')
else
  writeln('c does not equal 1')
end-if

if c=1 then
  writeln('c equals 1')
elif c>1 then
  writeln('c is bigger than 1')
else
  writeln('c is smaller than 1')
end-if

case c of
  1,2 : writeln('c equals 1 or 2')
  3   : writeln('c equals 3')
  4..6: do
         writeln('c is in 4..6')
         writeln('c is not 1, 2 or 3')
        end-do
else
  writeln('c is not in 1..6')
end-case