Visual C++中使用gotoxy() / clrscr()等函数

//Visual C++中使用gotoxy() / clrscr()等函数
#include <windows.h>
void clrscr(void);
void clreol(void);
void clreoscr(void);
void gotoxy(int ,int );

void clrscr(void) 
{
    CONSOLE_SCREEN_BUFFER_INFO    csbiInfo;                            
    HANDLE    hConsoleOut;
    COORD    Home = {0,0};
    DWORD    dummy;
    hConsoleOut = GetStdHandle(STD_OUTPUT_HANDLE);
    GetConsoleScreenBufferInfo(hConsoleOut,&csbiInfo);
    FillConsoleOutputCharacter(hConsoleOut,' ',csbiInfo.dwSize.X * csbiInfo.dwSize.Y,Home,&dummy); 
    csbiInfo.dwCursorPosition.X = 0;                                    
    csbiInfo.dwCursorPosition.Y = 0;                                    
    SetConsoleCursorPosition(hConsoleOut,csbiInfo.dwCursorPosition);   
}

/*********************************************************************************/

void clreol(void)  
{
    CONSOLE_SCREEN_BUFFER_INFO    csbiInfo;                            
    HANDLE    hConsoleOut;
    COORD    Home,pos;
    DWORD    dummy;
    hConsoleOut = GetStdHandle(STD_OUTPUT_HANDLE);
    GetConsoleScreenBufferInfo(hConsoleOut,&csbiInfo);
    Home = csbiInfo.dwCursorPosition;
    pos.X = 80 - csbiInfo.dwCursorPosition.X;
    FillConsoleOutputCharacter(hConsoleOut,' ',pos.X,Home,&dummy);
}

/*********************************************************************************/

void clreoscr(void)  
{
    CONSOLE_SCREEN_BUFFER_INFO    csbiInfo;                            
    HANDLE    hConsoleOut;
    COORD    Home;
    DWORD    dummy;
    hConsoleOut = GetStdHandle(STD_OUTPUT_HANDLE);
    GetConsoleScreenBufferInfo(hConsoleOut,&csbiInfo);
    Home=csbiInfo.dwCursorPosition;
    FillConsoleOutputCharacter(hConsoleOut,' ',csbiInfo.dwSize.X * csbiInfo.dwSize.Y,Home,&dummy);
}

/*********************************************************************************/

void gotoxy(int x,int y)  
{
    CONSOLE_SCREEN_BUFFER_INFO    csbiInfo;                            
    HANDLE    hConsoleOut;
    hConsoleOut = GetStdHandle(STD_OUTPUT_HANDLE);
    GetConsoleScreenBufferInfo(hConsoleOut,&csbiInfo);
    csbiInfo.dwCursorPosition.X = x;                                    
    csbiInfo.dwCursorPosition.Y = y;                                    
    SetConsoleCursorPosition(hConsoleOut,csbiInfo.dwCursorPosition);   
}