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  1. <?php
  2. $n=0;
  3. $i=0;
  4. $s=0;
  5.  
  6. echo("Please enter value for N\n");
  7. $n=(int)readline();
  8. $s=0;
  9. for($i=1;$i <=n; $i+=1)
  10. {
  11.     if($i % 2 == 0)
  12.     {
  13.         $s=$s+$i;
  14.         echo("Current value i=" . $i . " S=". $s);
  15.         echo("\n");
  16.     }
  17. }
  18. echo("Final result suma is S=". $s);
  19.  
  20. ?>
Success #stdin #stdout #stderr 0.03s 25548KB
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stdin
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10
stdout
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Please enter value for N
Final result suma is S=0
stderr
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PHP Warning:  Use of undefined constant n - assumed 'n' (this will throw an Error in a future version of PHP) in /home/mwkxp2/prog.php on line 9
https://ideone.com/Tj1Zf5
language:
PHP (php 7.3.5)
created:
2 days ago
visibility:
public

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