Bit Operations using Macros

Code

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

// Define bitwise macros here
#define set(reg,pos) (reg|= (1<<pos))
#define clear(reg,pos) ( reg &= ~(1<<pos))
#define toggle(reg,pos) (reg ^= (1<<pos))  

uint8_t modify_register(uint8_t reg) {
        set(reg,2);
        set(reg,7);
        clear(reg,3);
        toggle(reg,5);
    
        return reg;
}

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

Solving Approach