Bit Operations using Macros

Code

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

// Define bitwise macros here
#define SetBits(a, b)   ((a) |= (1 << (b)))
#define ClearBits(a, b) ((a) &= ~(1 << (b)))
#define TogBits(a, b)   ((a) ^= (1 << (b)))


uint8_t modify_register(uint8_t reg) {

    SetBits(reg, 2);
    SetBits(reg, 7);
    ClearBits(reg, 3);
    TogBits(reg, 5);
    
    return reg;
}

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

Solving Approach