Bit Operations using Macros

Code

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

// Define bitwise macros here
#define SET_BIT(reg, mask, offset) \
    reg |= mask << offset;         \

#define CLEAR_BIT(reg, mask, offset) \
    reg &= ~(mask << offset);        \

#define TOGGLE_BIT(reg, mask, offset) \
    reg ^= mask << offset;            \

uint8_t modify_register(uint8_t reg) {
    SET_BIT(reg, 0x1, 2);
    SET_BIT(reg, 0x1, 7);
    CLEAR_BIT(reg, 0x1, 3);
    TOGGLE_BIT(reg, 0x1, 5);
    return reg;
}

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

Solving Approach