ClearScreen5

#include <windows.h>

void ClearScreen() {
    HANDLE hStdOut;
    COORD coordScreen = { 0, 0 };    // home for the cursor
    DWORD cCharsWritten;
    CONSOLE_SCREEN_BUFFER_INFO csbi;
    DWORD dwConSize;
    hStdOut = GetStdHandle(STD_OUTPUT_HANDLE);
    // Get the number of character cells in the current buffer.
    if (!GetConsoleScreenBufferInfo(hStdOut, &csbi))
    {
        return;
    }
    dwConSize = csbi.dwSize.X * csbi.dwSize.Y;
    // Fill the entire screen with blanks.
    if (!FillConsoleOutputCharacter(hStdOut,         // Handle to console screen buffer
                                    (TCHAR)' ',      // Character to write to the buffer
                                    dwConSize,       // Number of cells to write
                                    coordScreen,     // Coordinates of first cell
                                    &cCharsWritten)) // Receive number of characters written
    {
        return;
    }
    // Get the current text attribute.
    if (!GetConsoleScreenBufferInfo(hStdOut, &csbi))
    {
        return;
    }
    // Set the buffer's attributes accordingly.
    if (!FillConsoleOutputAttribute(hStdOut,          // Handle to console screen buffer
                                    csbi.wAttributes, // Character attributes to use
                                    dwConSize,        // Number of cells to set attribute
                                    coordScreen,      // Coordinates of first cell
                                    &cCharsWritten))  // Receive number of characters written
    {
        return;
    }
    // Put the cursor at its home coordinates.
    SetConsoleCursorPosition(hStdOut, coordScreen);
}