Formatting currency

A currency is typically represented by a decimal number and currency code tuple. The Format method allows a second parameter that represents the currency code. It's Style should be either CurrencyStandard or CurrencyAccounting.

var locale = Locale.Create("en");
foreach (var style in new[] { NumberStyle.CurrencyAccounting, NumberStyle.CurrencyStandard })
{
    var formatter = NumberFormatter.Create(locale, new NumberOptions { Style = style });
    Console.WriteLine($"{style} {formatter.Format(-1234.56, "EUR")}");
    Console.WriteLine($"{style} {formatter.Format(-1234.56, "JPY")}");
    Console.WriteLine($"{style} {formatter.Format(-1234.56, "CNY")}");
    Console.WriteLine($"{style} {formatter.Format(-1234.56, "USD")}");
}

Currency	Style	Format (en)
EUR	CurrencyAccounting	(€1234.56)
	CurrencyStandard	-€1234.56
JPY	CurrencyAccounting	(¥1235)
	CurrencyStandard	-¥1235
CNY	CurrencyAccounting	(CN¥1234.56)
	CurrencyStandard	-CN¥1234.56
USD	CurrencyAccounting	($1234.56)
	CurrencyStandard	-$1234.56