Number to Text

[Markov]

Hi guys in looking for a function that help me with this problem, i have a number (int) and i need to pass it to text i mean like this 100 -> ONE HUNDRED so if anyone can help ill appreciate it
thanks
Markov

[ChrisW67]

There is nothing in Qt to do that for you. Boost Locale might be able to help but it will be subtly incorrect even for English, e.g. 103 => "One hundred three" in some places versus "One hundred and three" in my part of the English-speaking world.

A naive approach for English might start like:

• Break the number in groups of three digits, e.g. 123456 is two groups 123 and 456
• Take the first digit in each group and convert it to a word and append "hundred" e.g. one hundred, 4 hundred
• If the second digit is greater than 1 convert it to a word, e.g. "twenty" or "fifty", and append the last digit converted, e.g. "twenty-three" or "fifty-six"
• If the second digit is 1 then combine it with the last digit and lookup e.g. "eleven", "seventeen" etc
• If the second digit is 0 then simply convert the last digit
• Once you have all the groups converted put them together with the appropriate multiplier words, e.g. "thousand", "million", "billion".

For French the rules would be different because of a tendency to count in 20s, 84 => quatre-vingt-quatre. I'm sure that for many languages and regions there'd be new rules.

[rahat13]

You can do like this....

In Header file-

public:
static QString NumberToWord(const unsigned int number);

In Source file-

QString MainWindow::NumberToWord(const unsigned int number)
{
    const std::vector<QString> first14=
    {"Zero", "One","Two","Three","Four","Five","Six","Seven","Eight","Nine","Ten","Eleven",
     "Twelve", "Thirteen", "Fourteen" };
    const std::vector<QString> prefixes=
    {"Twen","Thir","For","Fif","Six","Seven","Eigh","Nine"};
 
    if( number <= 14 )
    {
        return first14.at(number);
    }
    if( number < 20 )
    {
        return prefixes.at(number-12) + "teen";
    }
    if( number < 100 )
    {
        unsigned int remainder = number - (static_cast<int>(number/10)*10);
        return prefixes.at(number/10-2) + (0 != remainder ? "ty " + NumberToWord(remainder) : "ty");
    }
    if( number < 1000 )
    {
        unsigned int remainder = number - (static_cast<int>(number/100)*100);
        return first14.at(number/100) + (0 != remainder ? " Hundred " + NumberToWord(remainder) : " Hundred");
    }
    if( number < 1000000 )
    {
        unsigned int thousands = static_cast<int>(number/1000);
        unsigned int remainder = number - (thousands*1000);
        return NumberToWord(thousands) + (0 != remainder ? " Thousand " + NumberToWord(remainder) : " Thousand");
    }
    if( number < 1000000000 )
    {
        unsigned int millions = static_cast<int>(number/1000000);
        unsigned int remainder = number - (millions*1000000);
        return NumberToWord(millions) + (0 != remainder ? " Million " + NumberToWord(remainder) : " Million");
    }
 
    throw std::out_of_range("NumberToWord() value too large");
}

QString MainWindow::NumberToWord(const unsigned int number)
{
    const std::vector<QString> first14=
    {"Zero", "One","Two","Three","Four","Five","Six","Seven","Eight","Nine","Ten","Eleven",
     "Twelve", "Thirteen", "Fourteen" };
    const std::vector<QString> prefixes=
    {"Twen","Thir","For","Fif","Six","Seven","Eigh","Nine"};

    if( number <= 14 )
    {
        return first14.at(number);
    }
    if( number < 20 )
    {
        return prefixes.at(number-12) + "teen";
    }
    if( number < 100 )
    {
        unsigned int remainder = number - (static_cast<int>(number/10)*10);
        return prefixes.at(number/10-2) + (0 != remainder ? "ty " + NumberToWord(remainder) : "ty");
    }
    if( number < 1000 )
    {
        unsigned int remainder = number - (static_cast<int>(number/100)*100);
        return first14.at(number/100) + (0 != remainder ? " Hundred " + NumberToWord(remainder) : " Hundred");
    }
    if( number < 1000000 )
    {
        unsigned int thousands = static_cast<int>(number/1000);
        unsigned int remainder = number - (thousands*1000);
        return NumberToWord(thousands) + (0 != remainder ? " Thousand " + NumberToWord(remainder) : " Thousand");
    }
    if( number < 1000000000 )
    {
        unsigned int millions = static_cast<int>(number/1000000);
        unsigned int remainder = number - (millions*1000000);
        return NumberToWord(millions) + (0 != remainder ? " Million " + NumberToWord(remainder) : " Million");
    }

    throw std::out_of_range("NumberToWord() value too large");
}

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Its done!

Now you can use like this-

int number=ui->label_Number->text().toInt();
QString word=NumberToWord(b);
 
ui->label_Words->setText(word);

int number=ui->label_Number->text().toInt();
QString word=NumberToWord(b);

ui->label_Words->setText(word);

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Thank you,
Rahat Hossain