Extract and Modify Field in a 32-bit Register

#include <stdio.h>
#include <stdint.h>

uint32_t update_register(uint32_t reg) {
    uint32_t extractMask = 0x1F << 10;
    uint32_t extractedValue = 0;
    extractedValue = (reg & extractMask) >> 10;
    if (extractedValue < 31) {
        extractedValue += 1;
        extractedValue <<= 10;
        reg &= ~(0x1F << 10);
        reg |= extractedValue;
    }
    return reg;
}

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