There are some facts about c you’re missing: There’s no string datatype. A string is just a sequence of char ending with a 0 byte. What you use here is a string literal — the compiler translates it to an array of char and automatically adds the 0 at the end. An array when passed … Read more
%x format specifier experts the argument to be of type unsigned int. In your case, printf(“%x\n”,(const uint8_t)0x0D); printf(“%x\n”,0x0D); arguments will be promoted (default promotion rule) to match the type, but in case of printf(“%x\n”,(const uint8_t *)0x0D); //supplying a pointer printf(“%x\n”,(uint8_t *)0x0D); //supplying a pointer You’ll invoke undefined behavior, as per C11, chapter ยง7.21.6.1 […] If … Read more