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

    unsigned int mask=0;

    for(int i=0;i<4;i++){
        mask |= (1<<i);
    }
    reg &= ~(mask << 8);

    reg |= ((baud & (mask))<<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;
}