Bit Operations using Macros

Code

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

// Define bitwise macros here
// #define setbits(reg) (reg | (1<<2) | (1<<7) )
// #define toggle(reg) (reg^(1<<5))
// #define clearbits(reg) (reg &~(1<<3))
#define modify(reg) ((((reg | (1<<2) | (1<<7)) ^(1<<5))&~(1<<3)))
uint8_t modify_register(uint8_t reg) {
    // Apply operations in order
    // reg = setbits(reg);
    // reg = toggle(reg);
    // reg = clearbits(reg);
    
    return modify(reg);
}

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

Solving Approach