Marking scheme for A3

Correctness: 16 marks
3 marks   game                     
2 marks   round                   
1 marks   points value             
2 marks   generating random cards 
1 marks   all figures rule         
1 marks   ace of clubs rule        
1 marks   zero points for opponent rule
1 marks   non-negative scores for round and accumulate score
2 marks   display messages
1 marks   read input to continue game

Comments        ... / 2 marks

Testing         ... / 2 marks 
 (game, round, some of the main predicates)

Total:  ... /  Out of 20 marks