Bit Operations using Macros

Code

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

// Define bitwise macros here
#define a (reg | (1<<2))
#define b (reg | (1<<7))
#define c (reg & ~(1<<3))
#define d (reg ^ (1<<5))
uint8_t modify_register(uint8_t reg) {
    // Apply operations in order
   reg=a;
     reg=b;
  reg=c;
      reg=d;
    return reg;
}

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

Solving Approach