Extract and Modify Field in a 32-bit Register

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

uint32_t update_register(uint32_t reg) {
    // Your logic here
    uint32_t mask = ((1 << 5) - 1) << 10; // 111 1100 0000 0000
    uint32_t field = (reg & mask) >> 10; // 1111
    if(field >= 31) {
        return reg;
    }
    field++; // 10000
    reg = (reg & ~mask) | (field << 10);
    return reg;
}

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