Bit Operations using Macros

Code

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

// Define bitwise macros here
#define CLEARBIT3(reg)   (reg &= ~(1 << 3))
#define TOGGLEBIT5(reg)  (reg ^= (1 << 5))

uint8_t modify_register(uint8_t reg)
{
    // Apply operations in order
    reg |= (1 << 2);
    reg |= (1 << 7);
    CLEARBIT3(reg);
    TOGGLEBIT5(reg);

    return reg;
}

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

    return 0;
}

Solving Approach