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[c] C: how to break apart a multi digit number into separate variables?

Say I have a multi-digit integer in C. I want to break it up into single-digit integers.

123 would turn into 1, 2, and 3.

How can I do this, especially if I don't know how many digits the integer has?

This question is related to c math numbers digits digit

The answer is

Source: Stackoverflow.com

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