Bit Operations using Macros

Code

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

// Define bitwise macros here
#define set2and7 ((1 << 7) | (1 << 2))
#define clear3 ~(1 << 3)
#define toggle5 (1 << 5)

uint8_t modify_register(uint8_t reg) {
    // Apply operations in order
    reg |= set2and7;
    reg &= clear3;
    reg ^= toggle5;
    return reg;
}

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

Solving Approach