23. Set Baud Rate Field in Control Register

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

#define CLEAR ~(((uint32_t)0xF) << 8)
uint32_t set_baud_rate(uint32_t reg, uint8_t baud) {
    
    return (reg & CLEAR) | (baud << 8);
}

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