Extract the Nibble from an 8-bit Register

Solving Approach

How do you plan to solve it?

Code

#include <stdio.h>

unsigned char extractNibble(unsigned char reg, int pos) {
	if(pos == 0){
		return reg & 0x0F;
	} else {
		return (reg >> 4) & 0x0F;
	}
}

int main() {
	unsigned char reg;
	int pos;
	scanf("%hhu %d", &reg, &pos);
	printf("%d", extractNibble(reg, pos));
	return 0;
}