Bit Operations using Macros

Code

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

#define set_bits()  ((reg  |= (1<<2)) | (1<<7))
#define clear_bit()   (reg &=~(1<<3))
#define toggle_bit()  (reg ^=(1<<5))

// Define bitwise macros here
     
uint8_t modify_register(uint8_t reg) {
    
     reg = reg | set_bits();
     reg = reg | clear_bit();
     reg = reg | toggle_bit();
    // Apply operations in order
    return reg;
}

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

Solving Approach