Set or Clear a Specific Bit in a Register

Code

#include <stdio.h>
#include <stdint.h>

unsigned char modifyBit(unsigned char reg, int pos, int mode) {
    // Write your code here
    uint8_t bit_mask = 1 << pos;
    if (mode) {
        return reg | bit_mask;
    }

    bit_mask = ~bit_mask;
    return reg & bit_mask;
}

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