Bit Operations using Macros

Code

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

// Define bitwise macros here
// I am 'assuming' I get to turn on optimizations 
// I far prefer the use of inline vs a macro
// Also, only 'suggesting' as I trust the compiler gods...
static inline void setBit(uint8_t *reg, uint16_t bit);
static inline void clearBit(uint8_t *reg, uint16_t bit);
static inline void toggleBit(uint8_t *reg, uint16_t bit);

uint8_t modify_register(uint8_t reg) {
    // Apply operations in order
    setBit(&reg, 2);
    setBit(&reg, 7);

    clearBit(&reg, 3);

    toggleBit(&reg, 5);

    return reg;
}

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

static inline void setBit(uint8_t *reg, uint16_t bit)
{
    if (reg)
    {
        *reg |= (1U << bit);
    }
}

static inline void clearBit(uint8_t *reg, uint16_t bit)
{
    if (reg)
    {
        *reg &= ~(1U << bit);
    }
}

static inline void toggleBit(uint8_t *reg, uint16_t bit)
{
    if (reg)
    {
        *reg ^= (1U << bit);
    }
}

Solving Approach