Password masking

passwd.c

#include <windows.h>
#include <stdio.h>

#define MAX_LEN 100

char getch(void);

int main(void){
    char pswd[MAX_LEN];
    char ch;
    int x;

    printf("Password: ");

    for (x = 0; x < MAX_LEN && (ch = getch()) != '\r'; ++x ) {
        pswd[x] = ch;
        putch('*');
    }

    pswd[x] = '\0';
    return 0;
}

/*
 * implementasi getch(): http://www.cplusplus.com/forum/articles/19975/
 */
char getch (void){
    HANDLE hStdin = GetStdHandle (STD_INPUT_HANDLE);
    INPUT_RECORD irInputRecord;
    DWORD dwEventsRead;
    CHAR cChar;

    while (ReadConsoleInputA (hStdin, &irInputRecord, 1, &dwEventsRead)) /* Read key press */
        if (irInputRecord.EventType == KEY_EVENT
	    && irInputRecord.Event.KeyEvent.wVirtualKeyCode != VK_SHIFT
	    && irInputRecord.Event.KeyEvent.wVirtualKeyCode != VK_MENU
	    && irInputRecord.Event.KeyEvent.wVirtualKeyCode != VK_CONTROL)
        {
            cChar = irInputRecord.Event.KeyEvent.uChar.AsciiChar;
	        ReadConsoleInputA (hStdin, &irInputRecord , 1, &dwEventsRead); /* Read key release */
	        return cChar;
        }
        return EOF;
}