StrEdit v2

enum  Types{S = 0, I, F};

char* strEdit(UINT types)
{
    system("cls");

    Types t = static_cast<Types>(types);

    HANDLE hConsole = GetStdHandle(STD_OUTPUT_HANDLE);
    COORD pos;
    pos.Y = 1;
    pos.X = 0;
    char* cloneStr = NULL;
    char* str = NULL;

    printf("Ввод:\n");

    while(true)
    {
        int symbol = _getch();

        cloneStr = new char[pos.X + 1];
        for (int i = 0; i < pos.X; i++)
            if (str[i] != '\0')
                cloneStr[i] = str[i];
        str = new char[pos.X + 1];
        for (int i = 0; i < pos.X; i++)
            str[i] = cloneStr[i];
        delete[] cloneStr;

        if(t == 0)
        {
            if (((symbol >= 97 && symbol <= 122) || (symbol >= 65 && symbol <= 90)) && pos.X < 50)
            {
                str[pos.X] = symbol;
                printf("%c", str[pos.X]);
                pos.X++;
            }
            if(symbol == 32 && pos.X < 50)
            {
                str[pos.X] = ' ';
                printf("%c", ' ');
                pos.X++;
            }
        }
        else
        {
            if(t == 1)
            {
                if (symbol >= 48 && symbol <= 58 && pos.X < 50)
                {
                    str[pos.X] = symbol;
                    printf("%c", str[pos.X]);
                    pos.X++;
                }
            }
            else
            {
                if(t == 2)
                {
                    if (((symbol >= 48 && symbol <= 58) || (symbol == 46)) && pos.X < 50)
                    {
                        str[pos.X] = symbol;
                        printf("%c", str[pos.X]);
                        pos.X++;
                    }
                }
            }
        }

        if (symbol == 8 && pos.X > 0)
        {
            str[pos.X] = ' ';
            pos.X--;
            SetConsoleCursorPosition(hConsole, pos);
            printf("%s", " ");
        }

        SetConsoleCursorPosition(hConsole, pos);
        if (symbol == 13)
        {
            str[pos.X] = '\0';
            break;
        }
    }
    delete[] cloneStr;
    return str;
}