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==1)
    {
        reg=reg|(1<<pos);
    }
    else
    reg=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

In the question first of all we need to check if user is enter which mode for that using conditional if else after that if user enter 1 and reg ang pos then in the if condition we write set bit logic for that other wise write a clear bit logic in else part