26. Extract and Modify Field in a 32-bit Register

#include <stdio.h>
#include <stdint.h>
#define MASK   0x1F
#define SHIFTS 0xA

uint32_t update_register(uint32_t reg) {
    uint32_t extracted = reg & ( MASK << SHIFTS);
    extracted = extracted >> SHIFTS;
    if (extracted < 31)
    {
        extracted ++;
            reg &= ~(MASK << SHIFTS);
    reg |= (extracted << SHIFTS);
    return reg;
    }
    else 
    {
        return reg;
    }
    

}

int main() {
    uint32_t reg;
    scanf("%u", &reg);
    uint32_t updated = update_register(reg);
    printf("%u", updated);
    return 0;
}