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
    //reg=(reg&~(0x0f<<8))|((baud & 0x0f)<<8);
    reg = (reg & ~(((1U << 4) - 1) << 8))| ((uint32_t)(baud & ((1U << 4) - 1)) << 8);
    return reg;
}

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