Bit Operations using Macros

Code

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

// Define bitwise macros here
#define SET_BIT_2   (1UL<<2)
#define SET_BIT_7   (1UL<<7)
#define CLR_BIT_3   (1UL<<3)
#define TGL_BIT_5   (1UL<<5)
uint8_t modify_register(uint8_t reg) {
    // Apply operations in order
    reg |= SET_BIT_2 | SET_BIT_7 ;
    reg &= ~CLR_BIT_3;
    reg ^= TGL_BIT_5;
    return reg;
}

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

Solving Approach