Rotate Left in an 8-bit Register

Code

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

uint8_t rotate_left(uint8_t reg, uint8_t n) {
  n %= 8;
  return (reg << n) | (reg >> (8 - n));
}

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

Solving Approach