Returning a char array doesn't work :(

why that doesn't work :

Code:

---

char[] PasswordMaker()
{
        char cPass[20];
        char cChar;
       
        for (int i = 0 ; i < 20;i++ )
        {
                if ((cChar = getch()) != '\n')
                        cPass[i++] = cChar;
                else
                        break;
        }
        return cPass;
}

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