Bit Operations using Macros

Code

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

// Define bitwise macros here
#define BIT(n)          (1U << (n))
#define SET_BITS(reg, m)    ((reg) |= (m))
#define CLEAR_BITS(reg, m)  ((reg) &= ~(m))
#define TOGGLE_BITS(reg, m) ((reg) ^= (m))
uint8_t modify_register(uint8_t reg) {

    SET_BITS(reg, BIT(2) | BIT(7));

    CLEAR_BITS(reg, BIT(3));


    TOGGLE_BITS(reg, BIT(5));

    return reg;
}

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

Solving Approach