xoa man hinh

#include<iostream>
#include<windows.h>
void cls( )
{
HANDLE hConsole = GetStdHandle(STD_OUTPUT_HANDLE);
COORD coordScreen = { 0, 0 }; /* here's where we'll home the
cursor */
DWORD cCharsWritten;
CONSOLE_SCREEN_BUFFER_INFO csbi; /* to get buffer info */
DWORD dwConSize; /* number of character cells in the current buffer */

/* get the number of character cells in the current buffer */
GetConsoleScreenBufferInfo( hConsole, &csbi );

/* fill the entire screen with blanks */
FillConsoleOutputCharacter( hConsole, (TCHAR) ' ',dwConSize, coordScreen, &cCharsWritten );

/* get the current text attribute */
GetConsoleScreenBufferInfo( hConsole, &csbi );

/* now set the buffer's attributes accordingly */
FillConsoleOutputAttribute( hConsole, csbi.wAttributes, dwConSize, coordScreen, &cCharsWritten );

/* put the cursor at (0, 0) */
SetConsoleCursorPosition( hConsole, coordScreen );
}
int main(){
std::cout<<"yen";
cls();
std::cout<<"nghia";
}