Bit Operations using Macros

Code

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

// Define bitwise macros here
#define MASK_1 0b10000100
#define MASK_2 0b00001000
#define MASK_3 0b00100000
uint8_t modify_register(uint8_t reg) {
    // Apply operations in order

    return (((reg | MASK_1) | MASK_2) ^ MASK_2) ^ MASK_3;
}

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

Solving Approach