a = 5
b = 20

if ( a and b )
then
   print("Line 1 - Condition is true" )
end

if ( a or b )
then
   print("Line 2 - Condition is true" )
end

--lets change the value ofa and b
a = 0
b = 10

if ( a and b )
then
   print("Line 3 - Condition is true" )
else
   print("Line 3 - Condition is not true" )
end

if ( not( a and b) )
then
   print("Line 4 - Condition is true" )
else
   print("Line 3 - Condition is not true" )
end

Line 1 - Condition is true
Line 2 - Condition is true
Line 3 - Condition is true
Line 3 - Condition is not true