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16 lines
404 B
C#
16 lines
404 B
C#
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using Packt.Shared; // ToWords extension method
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using System.Numerics; // BigInteger
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Write("Enter a number up to twenty one digits long: ");
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string? input = ReadLine();
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if (input is null) return;
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if (input.Length > 21)
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{
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WriteLine("I cannot handle more than twenty one digits!");
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return;
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}
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BigInteger number = BigInteger.Parse(input);
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WriteLine($"{number:N0} in words is {number.ToWords()}.");
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