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) {
    
    // reg&=~(0xF<<8);
    // reg |= (baud) <<8;// or reg|= (baud & 0xF) <<8
    return reg ;
}
uint32_t set_baud_rate2(uint32_t reg, uint8_t baud) {
    //mask = 0x0F00;
    //baud = baud<<8; This will not work as baud is uint8
    reg&=~(0xF<<8);
    reg|= baud<<8;
    return reg;
}
int main() {
    uint32_t reg;
    uint8_t baud;
    scanf("%u %hhu", &reg, &baud);
    printf("%u", set_baud_rate2(reg, baud));
    return 0;
}