23. Set Baud Rate Field in Control Register

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

uint32_t set_baud_rate(uint32_t reg, uint8_t baud) {
    // Your code here

    uint32_t baud_32 = baud;
    uint32_t mask = (~0U << 4);
    mask = ~mask;
    mask = mask << 8;

    // printf ("%u \n", mask );
    baud_32 = baud_32 << 8;

    reg = ( reg & ~mask) | baud_32;

    return reg;
}

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