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  1. num = 1;
  2. sum = 0;
  3.  
  4. while(num <= 20){
  5.     if(num % 2 == 0){
  6.         sum = sum + num
  7.     }
  8.     num ++; 
  9. }
  10.  
  11. System.debug('Sum of numbers at even positions: ' + sum);
Success #stdin #stdout #stderr 0.01s 8884KB
comments (?)
stdin
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Standard input is empty
stdout
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Object: nil error: did not understand #sum
MessageNotUnderstood(Exception)>>signal (ExcHandling.st:254)
UndefinedObject(Object)>>doesNotUnderstand: #sum (SysExcept.st:1448)
UndefinedObject>>executeStatements (prog:2)
stderr
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./prog:2: expected expression
https://ideone.com/3N99Ay
language:
Smalltalk (gst 3.2.5)
created:
1 day ago
visibility:
public

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