Bit Operations using Macros

Code

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

// Define bitwise macros here
#define set(a) ((a) |= (1<<2) | (1<<7))
#define clear(b) (b&=(~(1<<3)))
#define toggle(c) (c^=(1<<5))


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