Bit Operations using Macros

Code

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

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

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