017.cpp File Reference

How many letters would be needed to write all the numbers in words from 1 to 1000? More...

#include <iostream>

Go to the source code of this file.

Functions
unsigned	letters (unsigned k)
int	main ()
Variables
unsigned short	unit_digits [] = { 0, 3, 3, 5, 4, 4, 3, 5, 5, 4 }
unsigned short	tenth_digits [] = { 0, 3, 6, 6, 5, 5, 5, 7, 6, 6 }
unsigned short	special [] = { 3, 6, 6, 8, 8, 7, 7, 9, 8, 8 }

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Detailed Description

How many letters would be needed to write all the numbers in words from 1 to 1000?

If the numbers 1 to 5 are written out in words: one, two, three, four, five, then there are 3 + 3 + 5 + 4 + 4 = 19 letters used in total. If all the numbers from 1 to 1000 (one thousand) inclusive were written out in words, how many letters would be used?

NOTE: Do not count spaces or hyphens. For example, 342 (three hundred and forty-two) contains 23 letters and 115 (one hundred and fifteen) contains 20 letters. The use of "and" when writing out numbers is in compliance with British usage.

Definition in file 017.cpp.