Bit Operations using Macros

Code

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

// Define bitwise macros here
#define SET_BIT(r,b)  ((r) |= (1u << (b) ))
#define CLEAR_BIT(r,b)  ((r) &=~ (1u << (b) ))
#define TOGGLE_BIT(r,b)  ((r) ^= (1u << (b) ))


uint8_t modify_register(uint8_t reg) {
    SET_BIT (reg,2);
    SET_BIT (reg,7);
    CLEAR_BIT (reg,3);
    TOGGLE_BIT(reg,5);
    return reg;
}

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

Solving Approach