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icatalin

nr prim de pe pbinfo

Oct 26th, 2015
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C++ 0.25 KB | None | 0 0
  1. int prim(int x)
  2. {
  3.     int i;
  4.     if (x<=1)
  5.         return 0;// nu e prim
  6.  
  7.         if (x%2==0 && x!=2)
  8.             return 0;// nu e prim
  9.  
  10.  
  11.   for (i=3;i<=sqrt(x);i=i+2)
  12.         if (x%i==0)
  13.         return 0; // nu e prim
  14.  
  15.   return 1; // e prim
  16.  
  17. }
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