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  1. program Suma;
  2. var s,a:integer;
  3. begin
  4. s:=0;
  5. readln(a);
  6. while a>0 do
  7. begin
  8. s:=s+a;
  9. writeln('a=');
  10. readln(a);
  11. end;
  12. writeln('sumata na chislata e=',s);
  13. end.
Success #stdin #stdout 0s 340KB
stdin
Standard input is empty
stdout
sumata na chislata e=0