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  1. var
  2. n: Integer;
  3. begin
  4. ReadLn(n);
  5. WriteLn('The next number for the number ',n,' is ',n+1,'.');
  6. WriteLn('The previous number for the number ',n,' is ',n-1,'.');
  7. end.
Success #stdin #stdout 0s 4360KB
stdin
2
3
stdout
The next number for the number 2 is 3.
The previous number for the number 2 is 1.