如何删除输入的字母/字符串或任何输入

Question

I have made a hangman program in C. I have also started coding on C++. My game asks for a word (string), then enter and the hangman screen appears. But because I entered the word before, we can cheat by pressing the UP arrow key and see the previous inputs. Is there any way to delete the previous input words from record? (on windows) Please also tell me any specific terms if any for these types of things, Thank you;

Answer 1

Use SetConsoleHistoryInfo with a history buffer size of 0 on Windows Vista / Server 2008 or later. Not sure about other platforms.

Answer 2

Another way (besides using SetConsoleHistoryInfo ) is to implement an input of your program with getch() - there will be no history at all.

Example:

const int bufferSize = 2048;
wchar_t buffer[bufferSize];
memset( buffer, 0, sizeof(buffer) );
printf( "\nEnter string:\n" );

int charsEntered = 0;
while(1) {
    wchar_t ch = _getch();
    if( ch == L'\r' ) {
        break;
    } else if( ch == 8 ) {
        if( charsEntered == 0 ) {
            continue;
        }
        _putch( ch );
        _putch( L' ' );
        _putch( ch );
        charsEntered--;
    } else {
        buffer[charsEntered++] = ch;
        _putch( ch );
    }
}

wprintf( L"\nString: %s", buffer );