Bit Operations using Macros

Code

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

// Define bitwise macros here
#define SETB(x, n) (x | (1 << n)) 
#define CLRB(x, n) (x & ~(1 << n))
#define TOGGLEB(x, n) (x ^ (1 << n))

uint8_t modify_register(uint8_t reg) {
    reg = SETB(reg, 2);
    reg = SETB(reg, 7);
    reg = CLRB(reg, 3);
    reg = TOGGLEB(reg, 5);
    return reg;
}

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

Solving Approach