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  1. #include <iostream>
  2.  
  3. int main() {
  4.  
  5. std::cout << 1234.56789 << std::endl;
  6. std::cout.precision(9);
  7. std::cout << 1234.56789;
  8.  
  9. return 0;
  10. }
Success #stdin #stdout 0s 3140KB
stdin
Standard input is empty
stdout
1234.57
1234.56789