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 clear_mask = (~(((1 << 4)-1u) << 8 )) & reg ;
    reg= clear_mask | (baud << 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;
}

creating mask and clearning bit 11:8 in the given register and then inserting the baud rate bits in 11:8