Bit Operations using Macros

Code

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

// Define bitwise macros here
#define _SET_BIT(reg,bit) ((reg) | (uint8_t)(1 << (bit)))
#define _CLEAR_BIT(reg,bit) ((reg) & (~ ((uint8_t)(1 << (bit)))))
#define _TOGGLE_BIT(reg,bit) ((reg) ^ ((uint8_t)(1 << (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