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){
        reg &= ~(1<<pos);
        }
    if (mode==1){
        reg |= (1<<pos);
    }
    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

Provided with 2 modes (0,1)

If mode zero (0) -> the bit position of 'pos' in the register is to be cleared. i.e. reg &= ~(1<<pos)

If mode one (1)  -> the bit position of 'pos' in the register is to be SET.        i.e. reg |= (1<<pos)