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) {
    
    // cast baudrate value to 4 bits
    baud = (baud & 15);

    for(uint32_t i=0;i<32;i++)
    {
        // clear bits between (8-11) inclusive 
        if(i>=8 && i<=11)
        {
            reg &= ~(1<<i);
        }
    }

    // shift baudrate value to 8 bit position
    reg |= (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;
}