Score of golfer after playing on friday= +2
Score of golfer after playing Saturday's round = -5
After the end of Round on Sunday, Score of Golfer =0
The integer which represents the change in the golfer's score from the end of his round on Saturday to the end of his round on Sunday
= Score of golfer after playing on Sunday - Score of golfer after playing on Saturday
= 0 - (-5)
=0+5
=+5----Positive Integer