Bit Operations using Macros

Code

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

// Define bitwise macros here

uint8_t modify_register(uint8_t reg) {
    // Apply operations in order
    // set the 2nd and 7th bit
    reg=reg|(0b10000100);
    // clear 3rd bit
    reg=(~(1<<3))&reg; 
    // toggle 5th
    reg=reg^(1<<5);
    return reg;
}

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

Solving Approach