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 bits 2-7
    uint8_t mask;
    mask = (1U << 2) | (1U << 7);
    reg |= mask;

    //clear bit 3
    mask = ~(1U << 3);
    reg &= mask;

    //toggle bit 5
    mask = (1U << 5);
    reg ^= mask;

    return reg;
}

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

Solving Approach