Bit Operations using Macros

Code

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

// Define bitwise macros here
#define SET     ((1 << 2) | (1 << 7))
#define CLEAR   (~(1 << 3))
#define TOGGLE   (1 << 5)

uint8_t modify_register(uint8_t reg) {
    reg = reg | SET;
    reg = reg & CLEAR;
    reg = reg ^ TOGGLE;
    return reg;
}

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

Solving Approach