Bit Operations using Macros

Code

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

// Define bitwise macros here
#define SET_BIT_2_7(x) (x |= 0b10000100)
#define CLEAR_BIT_3(x) (x &= 0b11110111)
#define TOGL_BIT_5(x) (x ^= (1 << 5))

uint8_t modify_register(uint8_t reg) {
    // Apply operations in order
    reg = SET_BIT_2_7(reg);
    reg = CLEAR_BIT_3(reg);
    reg = TOGL_BIT_5(reg);
    return reg;
}

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

Solving Approach