Bit Operations using Macros

Code

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

// Define bitwise macros here
#define SET_BIT_2 reg | (1 << 2);
#define SET_BIT_7 reg | (1 << 7);
#define CLEAR_BIT_3 reg & ~(1 << 3);
#define TOGGLE_5 reg ^ (1 << 5);

uint8_t modify_register(uint8_t reg) {
    // Apply operations in order
    reg = SET_BIT_2;
    reg = SET_BIT_7;
    reg = CLEAR_BIT_3;
    reg = TOGGLE_5;
    return reg;
}

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

Solving Approach