Convert integer to hexadecimal

Question

I just need to convert integer to hexadecimal. Actually I have a char array in which I am storing hex values.

int var;
var=[self getValue];
char hexValues[5];
he         


        

Answer 1

a hex value IS an integer value

hexadecimal is just a way of displaying an integer.

if you want to create a string that is the hexadecimal representation of an integer, you can go:

char hexStr[20];
sprintf(hexStr,"0x%x",var);

you can also pad the number with zeros if you want, by going %0(total number of digits desired)x

eg:

int var = 0x123;
sprintf(hexStr,"0x%08x",var);

will result in hexStr being filled with "0x00000123"