Bit Operations using Macros

Code

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

// Define bitwise macros here
#define SET(reg) reg |= 0x84 
#define CLEAR(reg) reg &= ~(0x08)
#define TOGGLE(reg) reg ^= 0x20

uint8_t modify_register(uint8_t reg) {
    // Apply operations in order
    SET(reg);
    CLEAR(reg);
    TOGGLE(reg);
    return reg;
}

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

Solving Approach