Rotate Left in an 8-bit Register

Code

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

uint8_t rotate_left(uint8_t reg, uint8_t n) {
    bool overflow;
    while (n) {
        overflow = (reg & (1 << 7)) ? true : false;
        reg <<= 1;
        if (overflow)
            reg |= 0x1;
        n--;
    }
    return reg;
}

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

Solving Approach