format numbers

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double myDouble = 193.8701;
int myInt = 350;

// currency
Console.WriteLine(myDouble.ToString("C"));

// decimal (supports only integral types)
Console.WriteLine(myInt.ToString("D"));

// scientific (exponential)
Console.WriteLine(myDouble.ToString("E"));

// fixed-point
Console.WriteLine(myDouble.ToString("F"));

// general
Console.WriteLine(myDouble.ToString("G"));

// number
Console.WriteLine(myDouble.ToString("N"));

// percent
Console.WriteLine(myDouble.ToString("P"));

// round-trip
Console.WriteLine(myDouble.ToString("R"));

// hexadecimal  (supports only integral types)
Console.WriteLine(myInt.ToString("X"));

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