1. Set or Clear a Specific Bit in a Register

#include <stdio.h>

unsigned char modifyBit(unsigned char reg, int pos, int mode) {
    int mask;
    if (mode == 1){
    int mask = 1 << pos;

    reg = reg | mask;
    
    return reg;
    }
    else{
        reg &= ~(1<<pos);
        return reg;
    }

    // Write your code here
}

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