Rotate Right in a 32-bit Register

Code

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

uint32_t rotate_right(uint32_t reg, uint8_t n) {

    uint32_t mask = 1;
    uint32_t retval = reg;
    for (int i = 0; i < n; i++)
    {
        uint32_t temp_bit = (retval & mask) << 31;
        retval >>= 1;
        retval |= (temp_bit);

    }
    return retval;

}

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

Solving Approach