Set or Clear a Specific Bit in a Register

Code

#include <stdio.h>

unsigned char modifyBit(unsigned char reg, int pos, int mode) {
    // Write your code here
    if (mode == 0)
    {
        // clear bit - & with mask of 1's besides the bit at pos
        unsigned char mask = ~(1 << pos);
        reg &= mask;
    }
    else
    {
        // set bit - | with mask of 0's besides the bit at pos
        unsigned char mask = 1 << pos;
        reg |= mask;
    }
    return reg;
}

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

Solving Approach