31. Rotate Left in an 8-bit Register

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

uint8_t rotate_left(uint8_t reg, uint8_t n) {
    // Your code here
    uint8_t reg1=~(0xFF>>n);
    uint8_t reg2=reg&reg1;
    //printf("%u",reg1);
    reg2=(reg2>> (8-n));
    reg=(reg<<n);
    //printf("%u",reg);
    reg|=(reg2);
    return reg;
}

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