Handout #1

An example of Nested IF statements:

    get x
    if (x >= 0)
        then if (x < 50)
                 then put "F"
                 else if (x < 60)
                          then put "D"
                          else if (x < 70)
                                   then put "C"
                                   else if (X < 80)
                                            then put "B"
                                            else if (x <= 100)
                                                     then put "A"
                                                     else put "ERROR: x > 100"
                                                 end if
                                        end if
                               end if
                       end if
             end if
	else put "ERROR: x < 0"
    end if


Note:
	1) This is more efficient in 2 ways from the previous algorithm
		- only checks one side of the condition - the other
		  side is implicit if you reach this point
		- exits after you reach a true condition

	2) Use of indentation - "correct" but hard to read and see meaning