Bit Operations using Macros

Code

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

// Define bitwise macros here
#define BIT(n)              (1U << (n))
#define SET_BIT(reg, bit)   ((reg) |= BIT(bit))
#define CLEAR_BIT(reg, bit) ((reg) &= ~BIT(bit))
#define TOGGLE_BIT(reg,bit) ((reg) ^= BIT(bit))

uint8_t modify_register(uint8_t reg) {
    // Apply operations in order
    reg = SET_BIT(reg, 2);
    reg = SET_BIT(reg, 7);
    reg = CLEAR_BIT(reg,3);
    reg = TOGGLE_BIT(reg, 5);
    return reg;
}

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

Solving Approach