1. Set or Clear a Specific Bit in a Register

#include <stdio.h>

unsigned char clearBit(unsigned char reg, int pos){
    return reg & ~(1 << pos);
}

unsigned char setBit(unsigned char reg, int pos){
    return reg | (1 << pos);
}
unsigned char modifyBit(unsigned char reg, int pos, int mode) {
    // Write your code here
    unsigned char (*bitOperation[2])(unsigned char, int) = {clearBit, setBit};
    return bitOperation[mode](reg, pos);
}

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