Bit Operations using Macros

Code

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

// Define bitwise macros here
#define Set_bit2()    (reg |= (1 << 2))
#define Set_bit7()    (reg |= (1 << 7))

#define Clear_bit2()    (reg &= ~(1 << 3))

#define Toggle_bit2()    (reg ^= (1 << 5))


uint8_t modify_register(uint8_t reg) {
    // Apply operations in order
    Set_bit2();
    Set_bit7();
    Clear_bit2();
    Toggle_bit2();
    return reg;
}

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

Solving Approach