Bit Operations using Macros

Code

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

// Define bitwise macros here
#define setBit(reg, pos)    (reg |= (1<< pos))
#define clearBit(reg, pos)  (reg &= ~(1<<pos))
#define toggleBit(reg, pos)  (reg ^= (1 << pos))

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;
}

Solving Approach