Bit Operations using Macros

Code

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

#define num1 2
#define num2 7
#define num3 3
#define num4 5

uint8_t modify_register(uint8_t reg) {
   reg |=(1<<num1);
   reg |=(1<<num2);
   reg &=~(1<<num3);
   reg ^=(1<<num4);
    return reg;
}

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

Solving Approach