Bit Operations using Macros

Code

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

// Define bitwise macros here
// #define set_bits ((1 << 2) | (1 << 7))
// #define clear_bits 3
// #define toggle_bits 5
#define SET_BITS(r,b) (r|=(1<<b))
#define CLEAR_BITS(r,b) (r&=~(1<<b))
#define TOGGLE_BITS(r,b) (r^=(1<<b))
uint8_t modify_register(uint8_t reg) {
    // Apply operations in order
    // reg|=set_bits;
    // reg&=~(1<<clear_bits);
    // reg^=(1<<toggle_bits);
    SET_BITS(reg,2);
      SET_BITS(reg,7);
    CLEAR_BITS(reg,3);
      TOGGLE_BITS(reg,5)
    return reg;
}

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

Solving Approach