Bit Operations using Macros

Code

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

// Define bitwise macros here
#define set(reg, pos)  reg |= 1<<pos
#define clear(reg, pos) reg &= (~(1<<pos))
#define toggle(reg, pos) reg ^= (1<<pos)

uint8_t modify_register(uint8_t reg) {
    // Apply operations in order
    set(reg,2);
    set(reg,7);
    clear(reg,3);
    toggle(reg,5);
    return reg;
}

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

Solving Approach

write macro function for set, clear and toggle