Bit Operations using Macros

Code

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

// Define bitwise macros here

uint8_t modify_register(uint8_t reg) {
    // Apply operations in order
    for (int i=0; i<8;i++){
        if (i==2 || i==7) reg= reg| 1<<i;
        else if (i==3) reg= reg & ~(1<<i);
        else if (i==5) reg= reg ^ (i<<i);
    }
    return reg;
}

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

Solving Approach