Can someone kindly tell me the logic behind the program?

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1.00/5 (3 votes)

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Java

// prints even numbers between 0 and 100

    class ContDemo {
    public static void main(String args[]) {
    int i;
    
    for(i = 0; i<=100; i++) {

    if((i%2) != 0) continue; // iterate

    System.out.println(i);
    }
   }
 }

Posted 18-Aug-15 1:29am

anaQata

Updated 18-Aug-15 1:37am

CPallini

v2

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CPallini · Accepted Answer · 2015-08-18T01:43:00

It simply skips odd numbers.
Since the % operator gives the reminder of the integer division, for every even number ev, (ev % 2) result is 0. On the other hand, for every odd number od, (od % 2) result is 1.

You know, a more efficient algoritm would be

Java

public static void main(String args[]) 
{
  int i;

  for(i = 0; i<=100; i+=2) 
  {
    System.out.println(i);
  }
}