Rotate Left in an 8-bit Register

Code

#include <stdio.h>
#include <stdint.h>
//to rotate left
#define SHIFT_LEFT(reg,n) (reg<<n)
#define WRAP_RIGHT(reg,n) (reg>>(8-n))

uint8_t rotate_left(uint8_t reg, uint8_t n) {
    // Your code here
    return reg = SHIFT_LEFT(reg,n) | WRAP_RIGHT(reg,n);
}

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

Solving Approach