Which function ??

Which function is faster for clearing screen in win32 console program, function 1 or 2?

Function 1:

Code:

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void clrscr ()
{
  system ("cls");
}

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Function 2:

Code:

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void clrscr()
{
  COORD coordScreen = { 0, 0 };
  DWORD cCharsWritten;
  CONSOLE_SCREEN_BUFFER_INFO csbi;
  DWORD dwConSize;
  HANDLE hConsole = GetStdHandle(STD_OUTPUT_HANDLE);

  GetConsoleScreenBufferInfo(hConsole, &csbi);
  dwConSize = csbi.dwSize.X * csbi.dwSize.Y;
  FillConsoleOutputCharacter(hConsole, TEXT(' '), dwConSize, coordScreen, &cCharsWritten);
  GetConsoleScreenBufferInfo(hConsole, &csbi);
  FillConsoleOutputAttribute(hConsole, csbi.wAttributes, dwConSize, coordScreen, &cCharsWritten);
  SetConsoleCursorPosition(hConsole, coordScreen);
}

---

2
end of story..... system() is bad!

Function 2.
The system function is SLOOOOW, avoid it when possible.

-Prelude

A smaller number of lines of code doesn't always mean it is faster than more lines.

I've only used the first function and the results were creepy. So damn slow I've never seen. Now I'm using the second function and is beautiful.

Quote:

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A smaller number of lines of code doesn't always mean it is faster than more lines.

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I'm aware of that.


Thanks guys.