31. Rotate Left in an 8-bit Register

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

uint8_t rotate_left(uint8_t reg, uint8_t n) {
    while(n>0)
    {
        if(reg&(1<<7)){
            reg=(reg<<1);
            reg|=1;
        }
        else{
            reg=(reg<<1);
        }
        n--;
    }
    return reg;
}

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