Bit Operations using Macros

Code

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

// Define bitwise macros here
//uint8_t Operation1 = 0b10000100;

// #define Op1 uint8_t(132u);
// #define Op2 uint8_t(8u);
// #define Op3 uint8_t(32u);

// uint8_t modify_register(uint8_t reg) {
//     // Apply operations in order
//     reg |= Op1;
//     reg &= ~Op2;
//     reg ^= Op3;
//     return reg;
// }

#define SET_BIT(r, b)    ((r) |= (1 << (b)))
#define CLEAR_BIT(r, b)  ((r) &= ~(1 << (b)))
#define TOGGLE_BIT(r, b) ((r) ^= (1 << (b)))   //This is the best approach.

uint8_t modify_register(uint8_t reg) {
    // Apply operations in order
    SET_BIT(reg,2);
    SET_BIT(reg,7);
    CLEAR_BIT(reg, 3);
    TOGGLE_BIT(reg, 5);

    return reg;
}

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

Solving Approach