Bit Operations using Macros

Code

#include <stdio.h>
#include <stdint.h>
#define SET(n,k)    n|=(1<<k)
#define Clear(n,k)  n&=~(1<<k)
#define Toggle(n,k) n^=(1<<k)
// Define bitwise macros here

uint8_t modify_register(uint8_t reg) {
    // Apply operations in order
    SET(reg,2);SET(reg,7);
    Clear(reg,3);
    Toggle(reg,5);

    return reg;
}

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

Solving Approach