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By: a guest on Sep 17th, 2012  |  syntax: None  |  size: 0.18 KB  |  hits: 13  |  expires: Never
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  1. int a, b, c;
  2. int old_a, old_b;
  3. old_a = 0;
  4. old_b = 0;
  5. while(1) {
  6.   a = x;
  7.   b = y;
  8.   if (a != old_a || b != old_b) {
  9.      c = a + b;
  10.      old_a = a;
  11.      old_b = b;
  12.    }
  13. }