HEX value to variable

[N3BPM]

I am trying to use a variable that will have a HEX value. I have tried using char s[4] but this doesn't work in the command outportb(address,address).
Any idea what I could use?

[Salem]

addr = 0x40a;
For example.

[foxman]

char s[4];

declare 4 separate variables who'll be able to contain hexadecimal numbers from 0x00 to 0xFF (in most implementation).

[mike_g]

char s[4];

declare 4 separate variables who'll be able to contain hexadecimal numbers from 0x00 to 0xFF (in most implementation).

Why would you need to declare 4 seperate variables? Hexadecimal is only a different representation. The number held would still be the same. IE:

#include <stdio.h>

int main()
{
    char a = 0x41;
    printf("Hex: %x\n", a);
    printf("Decimal: %d\n", a);
    printf("ASCII: %c\n", a);
    getchar();
}