Bit Operations using Macros

Code

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

// Define bitwise macros here

#define SetBit(reg,bit)      (reg|=(1<<bit))
#define clearBit(reg,bit)    (reg&=~(1<<bit))
#define toggleBit(reg,bit)   (reg^=(1<<bit))


uint8_t modify_register(uint8_t reg) 
{
    SetBit(reg,2);
    SetBit(reg,7);
    clearBit(reg,3);
    toggleBit(reg,5); 

    // Apply operations in order
    return reg;
}

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

Solving Approach