5

Rounding

  1. #include <iostream>
  2.  
  3. int main() {
  4.     using namespace std;
  5.  
  6.     double x = 1000/3.0;    cout << "x = " << x << endl;
  7.     double y = x - 333.0;   cout << "y = " << y << endl;
  8.     double z = 3*y - 1.0;   cout << "z = " << z << endl;
  9.  
  10.     cout << "3*y - 1.0 = " << 3*y << " - " << 1.0 << " = " << z << endl;
  11.     if ( z == 0.0 )
  12.         cout << "z is null!" << endl;
  13.     else
  14.         cout << "z is NOT null!" << endl;
  15. }

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