Bit Operations using Macros

Code

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

// Define bitwise macros here
#define BIT_SET(r, b) ((r) |= (1U << b))
#define BIT_RESET(r,b) ((r) &= ~(1U << b))
#define BIT_TOGGLE(r,b) ((r) ^= (1U << b))

uint8_t modify_register(uint8_t reg) {
    // Apply operations in order
    BIT_SET(reg, 2);
    BIT_SET(reg, 7);
    BIT_RESET(reg, 3);
    BIT_TOGGLE(reg, 5);
    
    return reg;
}

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

Solving Approach