1. Set or Clear a Specific Bit in a Register

#include <stdio.h>
unsigned char output;
unsigned char modifyBit(unsigned char reg, int pos, int mode) {
    // Write your code here
    if (mode == 1)
    {
        output = reg  | (1<<pos) ;    
    }
    else if (mode == 0)
    {
        output = reg  & ~(1<<pos);

    }
    return output;
}

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