Bit Operations using Macros

Code

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

// Define bitwise macros here
#define BIT_MASK(p) (1 << (p))
#define BIT_SET(v, p) ((v) |= BIT_MASK(p))
#define BIT_CLEAR(v, p) ((v) &= ~BIT_MASK(p))
#define BIT_TOGGLE(v, p) ((v) ^= BIT_MASK(p))

uint8_t modify_register(uint8_t reg) {
    BIT_SET(reg, 2);
    BIT_SET(reg, 7);
    BIT_CLEAR(reg, 3);
    BIT_TOGGLE(reg, 5);

    return reg;
}

int main() {
    uint8_t reg;
    scanf("%hhu", &reg);
    printf("%u", modify_register(reg));
    return 0;
}

Solving Approach