Bit Operations using Macros

Code

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

// Define bitwise macros here
#define set_bit(num,k) (num |= (1<<k))
#define clear_bit(num) (num &=~ (1<<3))
#define toggle_bit(num) (num^=(1<<5))

uint8_t modify_register(uint8_t reg) {
    // Apply operations in order
    set_bit(reg,2);
    set_bit(reg,7);
    clear_bit(reg);
    toggle_bit(reg);
    return reg;
}

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

Solving Approach