Bit Operations using Macros

Code

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

// Define bitwise macros here
#define SET_BIT_2_7(reg) reg |= ((1<<7)|(1<<2))
#define CLEAR_BIT_3(reg) reg &= ~(1<<3)
#define TOGGLE_BIT_5(reg) reg ^= (1<<5)

uint8_t modify_register(uint8_t reg) {
    // Apply operations in order
    SET_BIT_2_7(reg);
    CLEAR_BIT_3(reg);
    TOGGLE_BIT_5(reg);
    return reg;
}

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

Solving Approach