32. Rotate Right in a 32-bit Register

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

uint32_t rotate_right(uint32_t reg, uint8_t n) {
    // Your code here
    // create mask to isolate the bits
    uint32_t mask = ((1 << n) - 1);
    // extract the bits
    uint32_t ext_bits = (reg & mask) << (32 - n);
    // shift the reg bits
    reg >>= n;
    // replace the bits
    reg |= ext_bits;
    return reg;
}

int main() {
    uint32_t reg;
    uint8_t n;
    scanf("%u %hhu", &reg, &n);
    printf("%u", rotate_right(reg, n));
    return 0;
}