Creating a number from digits stored in array using C

Question

Now I have this number 193456787 stored in an array in C with each digit in a cell, how do I construct a four digit number from the digits in even numbered positions for example like 9468 ?

With some thinking and some code? – Kerrek SB Oct 14 '14 at 12:57 — Kerrek SB, Oct 14 '14 at 12:57

unwind · Answer 1 · 2014-10-14T14:34:08.510

0

Well, quite obviously:

const int digits[] = { 1, 9, 3, 4, 5, 6, 7, 8, 7 };
const int num = 1000 * digits[1] + 100 * digits[3] + 10 * digits[5] + digits[7];

Just add the digits together, scaled by the appropriate weights of course.

edited Oct 14 '14 at 14:34

answered Oct 14 '14 at 12:57

unwind

391,730
64
469
606

Isn't there a `10 *` missing before `digits[5]` ? – Jabberwocky Oct 14 '14 at 14:19

Creating a number from digits stored in array using C

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