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Home/ Questions/Q 36689
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Asked: May 10, 20262026-05-10T14:25:57+00:00 2026-05-10T14:25:57+00:00

In C, what is the most efficient way to convert a string of hex

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In C, what is the most efficient way to convert a string of hex digits into a binary unsigned int or unsigned long?

For example, if I have 0xFFFFFFFE, I want an int with the base10 value 4294967294.

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  1. 2026-05-10T14:25:58+00:00Added an answer on May 10, 2026 at 2:25 pm

    You want strtol or strtoul. See also the Unix man page

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