Bit Operations using Macros

Code

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

// Define bitwise macros here
#define SET_TWO_SEVEN(n) (n |= 0x84)
#define CLEAR_THREE(n) (n &= 0xF7)
#define TOGGLE_FIVE(n) (n ^= 0x20)



uint8_t modify_register(uint8_t reg) {
    SET_TWO_SEVEN(reg);
    CLEAR_THREE(reg);
    TOGGLE_FIVE(reg);
    return reg;
}

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

Solving Approach