How to convert a literal string of hex to actual hex values in C++?

Asked Aug 08 '22 at 07:50

Active Aug 08 '22 at 07:50

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I have a string of hex values stored in a single string, such as:

string ex = "9715AF";

Where I want to store it in an array, as actual hex values:

unsigned char byteList[] = { 0x97, 0x15, 0xAF };

Is this something that's possible? I was trying to convert them to ASCII then decimal, but this didn't work out so well. Any advice is appreciated.

asked Aug 08 '22 at 07:50

James Radcliff

Get two characters at a time, convert each to its integer equivalent, put them together into a single byte, add the byte to your "list". – Some programmer dude Aug 08 '22 at 07:54
1

C++ integers only have values, not hex values and decimal values So `{ 0x97, 0x15, 0xAF }` is exactly the same as `{ 151, 21, 175 }` – john Aug 08 '22 at 07:55
If you want help with your current attempt, then please create a [mre] of it and show it to us, together with a description of the problems you have with it. – Some programmer dude Aug 08 '22 at 07:55
1

"but this didn't work out so well. " What is *this*? – 康桓瑋 Aug 08 '22 at 08:04

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