Bit Operations using Macros

Code

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

// Define bitwise macros here

#define SET_BITS(a,b)   (a | (1<<b))
#define CLEAR_BIT(a,b)  (a & (~(1 << b)))
#define TOGGLE_BIT(a,b) (a ^ (1 << b))

uint8_t modify_register(uint8_t reg) {
    // Apply operations in order
  
    reg = SET_BITS(reg,2);
    reg = SET_BITS(reg,7);

    reg = CLEAR_BIT(reg,3);
    reg = TOGGLE_BIT(reg, 5);
    
    return reg;
}

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

Solving Approach