You’re asking about the wrong language. C does not support the dot operator on integers. To do this in C, you need to print it to a string like so.
char numstr[10];
sprintf(numstr, "%X", 255)
3
solved Convert dec to hex number in C [duplicate]
You’re asking about the wrong language. C does not support the dot operator on integers. To do this in C, you need to print it to a string like so.
char numstr[10];
sprintf(numstr, "%X", 255)
3
solved Convert dec to hex number in C [duplicate]