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I need to conver decimal numbers to 4 digit lower-case hex numbers prefixed by 0x.
“%X” is good enough, but this is not exactly what I want.
printf("hex num is: %X\n", num);
I guess you need either
0x%04xor%#06x.%xmeans lower-case hex.0means padding with zeros if shorter than the specified number of digits.4or6specifies the desired width.#means0xprefix.