31. Rotate Left in an 8-bit Register

#include <stdio.h>
#include <stdint.h>
 
 #define ROTATE_LEFT(reg,n) reg = reg<<n | reg>> (8-n) 
uint8_t rotate_left(uint8_t reg, uint8_t n) {
    // Your code here
    ROTATE_LEFT(reg,n);
    return reg;
}

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