Bit Operations using Macros

Code

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

// Define bitwise macros here
#define SET_BIT(reg,bit) ((reg) |= (1 << (bit)))
#define CLEAR_BIT(reg,bit) ((reg) &= ~(1 << (bit)))
#define TOGGLE_BIT(reg,bit) ((reg) ^= (1 << (bit)))

uint8_t modify_register(uint8_t reg) {
    // Apply operations in order
    /* set bits 2 and 7 */ 
    //reg |= (1 << 2) | (1 << 7);
    SET_BIT(reg,2);
    SET_BIT(reg,7);

    /* clear bit 3 */ 
    //reg &= ~(1 << 3);
    CLEAR_BIT(reg,3);

    /* toggle bit 5 */ 
    //reg ^= (1 << 5);
    TOGGLE_BIT(reg,5);

    return reg;
}

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

Solving Approach