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  1. product(item1,3000,4.8,20).
  2. product(item2,1800,4.2,200).
  3. product(item3,5000,4.9,5).
  4. product(item4,2500,4.5,80).
  5.  
Success #stdin #stdout #stderr 0.02s 6784KB
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Standard input is empty
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Standard output is empty
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ERROR: '$runtoplevel'/0: Undefined procedure: program/0
   Exception: (3) program ? EOF: exit
https://ideone.com/q8QxHM
language:
Prolog (swi 7.6.4)
created:
6 days ago
visibility:
public

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